Tick the following boxes if they apply to you: You are a PC owner. You own no consoles.
You have never played Guitar Hero. You enjoy rock music, guitars, and the company of your friends. If this sounds like you, buy Guitar Hero III right now. It's entirely original, novel and innovative, and incredibly fun to play.
If, however, you failed to tick off any of the imaginary boxes above, this is a trickier beast to gauge. As much as we love the fact that one of our favourite console games has come to PC, it doesn't feel right, or even play well on a small monitor.