Guitar Hero 3 was never a sure thing. With Activision taking over the franchise, it could have been a disaster. Fortunately that's not the case, although they don't bring much new to the table. Having played Guitar Hero 1 and 2, I was able to step into this immediately. The characters and set-up are all the same for the most part. Even better, all of my old peripherals work still worked.
My favorite part of this entry in the series is the new tracks. The songs are great, and many of them are the original recordings; I actually prefer the singers to my own singing (a high standard indeed)! That said, while I enjoyed listening to the new songs, playing them was another matter. These suckers are hard. The difficulty in this version has been ramped up dramatically, really too much for me to enjoy it. Even on co-op some of the songs are almost impossible on the higher difficulty levels. When I have a friend over I just want to play and have a good time, not argue with him about who keeps messing us up. It's not a good challenge, it's just no fun. Still, if you liked the first two you'll like this one, but if it ain't broke, please don't fix it Activision.