I LOVE WII. I LOVE GUITAR HERO. It takes up way too much of my time and it's WORTH IT.
Bought this for our nephews and by doing so, saved Christmas! Seriously, I'd never seen children so happy, it rivaled the Nintendo 64 Kid meme. We've had the Xbox version for a while, and it's pretty awesome. The new drums just really take it to another level with the improved pads and cymbals. Songs are fun and I always preferred Guitar Hero's guitar note interface over Rock Band's.