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Go for rock band. In my opinion it is, by far, the better game. The songs are fun to play over and over again. Not only that you have 3-4 instrument choices. Guitar, bass, drums, and mic. And it is a great party game. The songs are a bit more modern than those of Guitar Hero so you'll be more likely to know them. But that doesn't divert away from the music quality.

Buy the bundle package. You will no regret it because you get the instruments, and the game, plus an adapter to enable group play! With Rock Band 2 coming out sometime this year, or even next. ((I'm not sure)) You'll only have to purchase the game this time around.

The only problems, I heard, about the game are..If you like the guitar hero guitars and how they feel, the Rock Band guitar will feel very, very different. The buttons are built into the frets and not just on top . But it has a second set of colored buttons for people with smaller hands, or if you just wanna look cool while rocking that guitar solo.

The drum heads are very good, for the set. But if you do, as my friend Chris did, and beat around the heads and not on top of them. You will KILL the sensitivity. I kid you not and you will cry. I nearly strangled my friend when he started on my set, and he quickly learned better. Also with the drum set the foot pedal is known to break if hit too hard, or used for long periods of time. I am a drummer and the way I use my real foot pedal nearly kill the one for my RB set. I suggest, if you really get into buy an electronic pedal from an electronic drum set. It will work and it will not break, you can smack them around.

I hope this helps you make your choice. But either way, rock on.