Not worth it, wait and buy it used.
User Rating: 6 | Guitar Hero: Aerosmith (Bundle) X360
I picked it up because I was bored, and blew through it in about a day. I'm not sure what they did to the game play, but hammer ons and pull offs aren't as responsive as they were in guitar hero 3. I liked most of the songs on it, but some were, dare I say, boring? I used to think I was an Aerosmith fan, but that must have been because I missed all of the crap they put out before I was born. (Okay, so most of the stuff I hated wasn't from way back, but it did suck). The only thing this game did for me is it gave me hope for the future of band specific Guitar Hero games. Personally, I hope they offer GH World Tour functionality (vocals, drums) with GH Metallica, and I really hope they eventually put out a System of a Down title (I don't want much, just every song in their library) but I digress. Guitar Hero Aerosmith is a great game if you love Aerosmith, and are bored with the other music games out there. If you don't care so much for Aerosmith, I recommend picking up DLC for GH2, GH3, or Rock Band, it keeps your games fresh and fun.
btw, Why are people complaining about the lack of DLC for GHA? Odds are it would just be more aerosmith music anyway. 
