I love the drums the most, as well. I got
Rock Band 2 about two months ago and I love it (no mic, though--I just bought the guitar and drum set). I'm still playing most of the songs on Medium when on drums, but I'm learning to play Hard...it'll take time, but either way, it's a blast.
I've had a few awesome
Rock Band gatherings. They'll be even better because one of my friends got the entire set, so he can bring over his guitar and microphone. Plus he picked up a used copy of
Rock Band 1, so he's gonna bring that over so I can buy the $5 key to rip the songs on that disc to my game...which I must say is an awesome feature.

Plus, 20 free songs with purchase of a new copy of the game? Hell yeah!
Carry On Wayward Son is a fave, though not too hard on the drums...