Taking game reviews as gospel and letting them decide what I play and avoid, I am glad I dropped that after Gamefan hyped up a PS1 import game called Hermie Hopperhead, I bought Hermie from an import shop and it was one of the worst games I ever played, from then on I refused to listen to game magazine editors, so thank you Gamefan for waking me from my brainless slumber.
TBFP, GameGrumps(I am not of fan of GG anymore as it's lost it's spirit somehow, I like JonTron and early Danny eps, I think I stopped watching around the time they expanded into all the other shows, the last play I watched was Silent Hill Shattered Memories.). I watch SplitPlaythru for walkthroughs and overall game watching.
Everytime I see a "Master Race" meme pic I can't help but want someone to take the PC character and have him begging at the feet of the peasants for games, because PC gamers are the biggest port beggars now.
The only one I played to completion is Modern Warfare, I played MW 2, MW 3, Black Ops 1 & 2, WAW and COD 2. I am not a fan of multiplayer so I am speaking only about single player experience. I think my problem with COD 2 is that I hate the era it took place in and was pretty bored, so when it went modern I was all for it but after beating MW I feel like I got my fill of the series, oddly enough it didn't stop me from playing the other ones mentioned. So.... I guess MW even though I don't really remember anything about it. *shrugs* -_- Why did I even post?
Atari2600, NES, SNES, Sega Genesis will always be my most memorable consoles of all time because they are tied to the good times of my childhood, so probably those even though my brain is probably full of nostalgia when it comes to those. I can't really say which game library I enjoyed the most as I owned lots of consoles at the same time and jumped from one to the other as needed, so it's like a mish-mash of gaming, so my answer to your question is a firm I don't have a favorite, only a least favorite, which is the N64.