I love Karachi, Terminal, Favela and Scrapyard. I hate Estate and Derail. I actually like Wasteland on certain modes and I either totally suck or own on that map.

I'm a fan of, Terminal, Highrise, Invasion, Skidrow, and Scrapyard.  

Not a fan of Underpass, Favela, Quarry, and Wasteland.  
 
I play domination almost exclusively though. 

Terminal the best

Scrapyard, Karachi, Skidrow and Estate are the four worst maps ever created in mankind. All the other maps are either okay or great.
 
It's not even funny. Especially Scrapyard and Estate.

Likes:
Terminal 

Dislikes:
Everything else
 
Estate is undeniably crappy. Only n00bs like Estate.

Like: 
Rust 
Highrise
Skidrow
 
Dislike: Any other map that goes higher than 2 stories

I really don't like Afghan.

Favela sucks. 
 
Sub Base is awesome.  
 
Also, Estate, Terminal, Highrise, and Skidrow are awesome.  
 
I can't stand Karachi, Invasion, or Wasteland. Really, everytime I get Wasteland I either leave the lobby or if decides to just drop me the fuck in I quit immediately. 
 
Enjoy Rust because I'm a tactical knifer. 
 
Anything not mentioned is in the middle.

i have suddenly got a love for derail 
taking a stealth class onto it is crazy fun, flanking enemies and ending them without getting caught is pretty damn intense 
also there is nothing more satisfying than finding "that guy" with the heartbeat sensor and cold blooded hiding away, and shanking the fool

I leave as soon as highrise or wasteland is the game map
 
but I love me some Rust, Terminal or Estate

I like all the maps, actually. But by far the Terminal is my favorite.

How can so many people like estate? its the most unbalanced map on the entire game ¬¬

Favourites:
 
1. Wasteland
2. Scrapyard
3. Terminal
 
Least Favourites:
 
1. Karachi
2. Invasion (sometimes)
3. Estate

im surprised so little people enjoy skidrow, i love that map since i get crazy sniper kills by lying down prone next to the little playground near one of the spawn sites and shooting anybody that goes through the library in the middle building (in the dark room), and i almost never get any competition from other snipers so i really enjoy that map. but yeah terminal is great for just some run and gun or riot shield action

I agree.  Terminal is fantastic - Highrise is equally amazing.   I actually like Derail but mostly only for Ground War - Team Deathmatch.  I also wanna throw in Rust is a throwback per se to the map in the previous game,  Shipment.
 
I'm personally not a fan of Estate and Rundown

Any map with snipers is bad (Wasteland, Afghan, Derail, and Estate). I like Highrise only for Capture the flag. Karachi, Skidrow, and Invasion are some of my favorites.

My favorite map is probably Terminal. I always seem to do pretty well with my RPD class in that map (maybe it has something to do with "No Russian"...). 
The only map that I really don't like is Favela. Somehow I always get owned by guys on balconies and rooftops, and when I try to use high ground myself I get shot from other rooftops...
The rest are somewhere in the middle.
Also, I've recently found that Wasteland isn't as bad for me as I thought it would be. I do really well with the FAMAS on it.

Ok, I've changed my list around a bit. For starters, on Sub Base, there is a massive camping spot. Inside the building on the navy seals spawn side, where you can look out of the windows and spot 'B' in Domination, there is a ledge. When you walk out onto this ledge and back towards the wall, when playing as the Navy Seals, you are totally camoflauged with the wall. This is a big issue, as from this position, you can basically control the flow of the match, as in Domination, 'B' is usually the postion everyone goes for. When equipped with a sniper, you can snipe everyone that attempts to capture 'B'. Soon enough, I will post a video on YouTube revealing this camping spot. The world must know!
 
So yeah, Sub-Base is fun when you are camping, (come on, admit it, everyone camps a bit). 
But it isnt fun when I bullet flies into your face from a camper becuase you are trying to capture B.
 
Agreed?

Terminal is the absolute best, and the rest are fine except for Estate, Rundown, Underpass, and Karachi.

Favourites: Afghan, Rundown, and Highrise.
 
Least Favourite (as in HATE the SHIT out of it): Wasteland, Favela, Underpass, oh and did I mention WASTELAND?! 
 
Shittiest map out of all of them. There are 2 options that I always seem forced to take. The first one is sniping, and the second(the one that most people tend to do) is running into the bunker and killing all the dudes that camp there. My only problem with it is is that EVERYONE tends to gravitate to that one spot, ignoring the rest of the map, which makes it extremely boring when you encounter the same scenarios over and over again.

I've decided Wasteland is the worst map in any shooting game, ever.  Unless you're a sniper with a thermal scope, it's just not very fun at all.  Spawning, and having to run for thirty seconds to the middle little bunker, only to get a kill or two and then die is not very fun.  Every game I've played on the map has a clear focus on the bunker, save for the snipers battling out in the open (I don't snipe...) and it's just terribly tedious.  The same could be said about Derail, but to a lesser extent.  The clear focus is on the large two story building in the middle of the map, and everyone instantly runs to it, again save for the snipers.  The only difference is there are ways to flank without being picked off by snipers (especially since the thermal scope sucks here) and as a whole their is just more to the map.

You know what ruins almost every map in this game. Spawn points. I can't count the amount of times I've been on one side of the map, in the middle of an intense firefight, get killed and end up on the exact opposite side of the map, by myself with a thirty second run back to where I was at which point the action has moved on. On some maps, especially Estate, Wasteland and Underpass you can spend upwards of two minutes without seeing an opposing player because of the spawn system.

i hate Estate more than anything i have ever hated ever.

Best for me is Derailed
Worst Rust...Too hectic

I can honestly say that i like each map aside from Wasteland. Going into the cave thing is just begging for trouble unless your entire team is there, and up top is to easy for snipers to get you. Most of the time I find one of those houses and just camp it out and get a kill or two if I see somebody within range.

The Favela is crazy fun - I love maps with narrow passages when you suddenly run into enemies. Terminal is also a lot of fun, though. Karachi and Skidrow too.
 Derail is annoying for some reason. Strange spawn points and bumpy, weird map design all-round. Sub Base, on the other hand, is hilarious in Domination. 

I seriously hate Estate - at least on CtF, since there is much open space and you get hammered when either trying to get up or down the hill. Afghan is boring as hell, unless you like getting sniped by people in bunkers.

Normal Team Deathmatch = Favela and Rundown all the way; Hardcore Team Deathmatch = Skidrow forever

I used to hate Estate, but I find it a lot more fun now, at least in TDM. I have the most fun staying in or around the house, where the action is. I still don't really like it in FFA.

Derail is awful. It's the new Bloc. Maybe Infinity Ward should give up large snow maps.

I don't like Estate. That is all.

I love scrapyard, terminal, favela and sub base. I hate wasteland, afghan  and rust. the rest of the maps are okay

like:
Terminal
Favela  

Hate:
underpass
wasteland
derail

Favorites:
 
Wasteland
Derail
Afghan
 
These maps give you the ability to actually MOVE and do stuff before dying.  I can't stand small maps. Complete chaos and no skill.
 
Least Favorites:
 
Skidrow
Rundown
Terminal

Best maps are Terminal, Highrise, Favela, and Derail. The worst are Sub base, Estate, and Quarry. 

Am i the only one who really likes rust 

I like Invasion, Karachi, Sub Base, Wasteland and Favela.  I can't stand Rust and Estate.  The rest are okay at best.

pretty good list of the maps. i also like afgan.