I preferred the soundtrack in TW1, and music always has a significant impact on my opinion of a game's atmosphere. It's not that the music in TW2 wasn't good though. I just didn't find it as memorable as what was in TW1.
I have to say though, I was also thinking TW2 was game of the Decade in those first 2 chapters. It wasn't until I played the entire game that the euphoria wore off.
It was still the best RPG in 2011 for me.