Rockband or Guitar Hero

So I was originally planning on just buying the GHII and GHIII bundles, but I've heard that RB is awesome. The thing is, I'd probably spend most of the time on RB with the guitar, but I think it's cool (that for $10-20 more than the two bundles) my friends can play drums or karaoke with me or whatever. So how good is the guitar stuff in RB, and is it a better value (in your opinion) than GH II and III?

Sorry, I'm pretty sure this has been asked a million times, but I didn't see a topic in the top 50 or so.

yes u should get Rock band instead...the guitar is awesome...and if you have friends that can come over or if you have a little or older brother...or anybody around who wants to play...is awesome..also if you have xbox live you can go play with other players online..its amazing..you should definetily get it..

although the guitar for rock band is cool and sooo much better than the gh3 guitar the rock band stratocaster will not work with gh3, but the previous guitars for all guitar heroes and 3rd party controllers will work with rock band

just alittle FYI