Rock Band or Guitar Hero?

So I don't have either of these,but If I wanted to get one which is funner?

i enjoy Rock Band quite a bit more actually...its a much better party game imo because of the amount of DLC. Theres really something for everyone just about. I really only play guitar hero by myself on guitar, because it seems most of the songs cater to the guitar players. But Rock Bands World Tour mode is easily the best single player experience, its pretty addicting. Much more so than GH:WT's sad excuse for a mode.

Fer sure guitar hero. Come on..they have METALLICA lol. The greatest band ever. Plus..it has a recording studio. which is awesome. You may wanna stick with the rock band drum set though.