estate sucks ass!

Rust. So many priceless moments on that map.

Scrapyard. Great for any mode, amount of players, and has so many flanking routes. It's just good. If I were to list them in order from best to worst... 
Good Maps 
1. Scrapyard 
2. Terminal 
3. Sub base (either here or 2nd)
4. Quarry (Very overlooked good map) 
5. Invasion 
6. Skid Row (Here or 5th) 
7. Favela (Too many windows,balconies)
Decent Maps
8. Afghan
9. Derail
10. Underpass 
10.1. Rust (It can be fun sometimes)
Bad Maps
11.  Highrise (easy to spawn trap)
12. Estate (Way too camp heavy)
13. Rust (Can also be horrible. Good for Private matches, bad for online)
14. Wasteland    (Just an awful open map) 
 
That's my opinion of the maps. Usually, if I come across any of the top section of maps I am pretty alright with it. If the map is in the 2nd section I get a little irritated. If it is in the last section, I usually just back out as there is no reason to play those maps. Highrise can be fun sometimes, but if someone gets an AC130, chopper gunner, or simply takes A and B in Dom. the other team is screwed.

Bleh, I voted for Terminal but when I really think about it I think Scrapyard is my favorite. At first I thought it was far to small but once you submit to the laws of MW2 and start camping you realize Scracyard is excellent, mostly because there is no safe place to camp so I don't feel like a complete dbag for doing it, always have to keep an eye out. Also fuck Estate, that map causes me to rage and/or cry every time I see it pop up in the lobby.

There is a couple I like but I don't remember their names.  Scrapyard is good but kind of insane on Ground War.
 
A lot of the maps I don't like. Too many 2nd story windows and roofs to hide on.

I enjoy Skidrow the most.  Fine with everything else except for Estate and Underpass.

Scrapyard.

Hmm, I chose skidrow as best map, but my favorite is underpass.

I am not a fan of any map but rundown.

Scrapyard is so much fun and I'm fucking sick of Estate.

I really like Karachi and Terminal.

Rust can be very fun on splitscreen with a buddy but my favourite online map has to be either Scrapyard or Wasteland.  
Also I have to be one of the only people who don't much care for Terminal, good map, but its not a proffered map for me.

quarry. where's the love?

Terminal, by a mile.

Terminal

Favela, just because its amazing for knifing

Rundown for the win.

Highrise and Favela

Derail but there isn't any bad map in this game.