I thoroughly enjoyed this game (or episode). Looking forward to the next installments, just wish there was some type of deal on the 360 for buying all episodes (PS3 and PC have a "season pass" if I recall correctly...).
From my own experience the 360 visuals are somewhat dark, making some details harder to see in night scenes. Didn't think too much of it, but then I read a blog that commented on the darkness issue and that other people they had talked to thought it was dark compared to other versions. Can't compare myself, but might be something you want to look into more if it's a concern.