guitar hero guitar for rockband 2 and 3?

[marvelman2006]

I have a question, anyone know which guitar hero guitar can work perfectly with rock band 2 and soon 3?

 

[Spidey-Bat]

It depends on the system but I believe all GH guitars work with Rock Band 2. Not sure about RB3 though.

This hasn't been updated in 2 years but I think all the recent stuff works with anything.
http://www.joystiq.com/Instrument-Compatibility-Matrix/