Sounds interesting, and DJ Hero does look like an interesting spin on the music genre.
But, as I've said before, I'm not buying it. Not because it looks like a crap game, but because Activision is publishing it and I don't want to give them my money, no matter how tempting it is. I may be missing out on a god-send to the music genre, and I don't care. Thank Bobby Kotick for that.
However, as I had stated before aswell, I do wish a good game upon those who are going to get it. No reason you shouldn't get your money's worth. It's your choice to buy the game, and subsequently support Activision, and that's perfectly fine, I respect that decision. I just personally will not support them, no matter how small it is.
Enjoy your game, I mean that in the most sincere way possible.