I already loved Far Cry and Crysis , but i think Crysis 2 takes the cake so far. Despite the lack of dx11 and hi-res textures PCgamers have been foaming tirelessly about, i actually think crysis 2 somehow is more 'beautiful'. I'm astounded at some of the sights you get to see in this game, and feel like a kiddie trappling to enter a candystore everytime i set foot a new arena. I did put the blur down with some downloadable config programs though, it was a bit excessive for my taste.
The gameplay so far is spectacular. I got my ass handed endlessly in the beginning, but now i'm switching in my suit while cruising effortlessly based on the mental map you make like some kind of superweapon...-man. It's awesome. The replay-value, something i usually have little interest in, must be great i think. I'm still on my 1st run, but am already itching to take the difficulty up and try some different approaches in certain areas.
As for my consumer-advice: if you like fps, and don't have some crazy religious affection with crysis 1 in the way that you wanted crysis 1 2.0 and nothing else, buy this game. It's an instant-classic imho, and the haters will be on the wrong side of history on this one