[quote name='omgu8myrice']so what is best to do? i dont own guitar hero 2 either, should i get the wired GH3, or get Gh3 disc and x-plorer controller, or what?[/QUOTE]
I would suggest you just buy the GHII bundle and play it first. I think it's a much better game than III. But even if it's not, it's still worth playing, and since it's harder to hit notes in II than III, it would take some adjusting to play II after III.
Whatever you do, don't buy the X-Plorer by itself. It's a ripoff, since you could probably get the game for $20 more.
As for the guitars, I'm with RichMeisterMan, but most people seem to prefer the Les Paul.