Upon Further Review:
I have concluded that Guitar Hero sucks.
I own GH, GH2, GHIII, GH 80s, GH Smash Hits, GH World Tour, GH Metallica, GH5. The only one I don't have is GH Aerosmith.
I will not buy another GH game. The setlists compared to Rock Band are absolutely awful. The downloadable content is the pits. The fact that you keep having to buy discs is asinine.
What finally did me in, though, was GH 5. After promising that you'd be able to export the setlist from GHWT, they wait until AFTER the launch to mention that you can't get ALL the songs from World Tour over. In fact, you can't get but 35 of them. And you can't get any Jimi Hendrix, you can't get any Ozzy, you can't get Beat It, you can't get Hotel California, you can't get Freak on a Leash, you can't get Hot For Teacher.
Fuck this.
Rock Band wins. The battle is over.
I'm not buying Band Hero, DJ Hero or any of their other shit.