Awesome game, great tracks, only problem I have is with the menus.
Pros: Great Mixes, Flashing lights make you feel more badass, Cross-fading is awesome.
Cons: The menu could use some work, theres no career mode, just venues straight from the main screen. Would have liked something that was designed more like GH's, makes things slightly confusing. Also sometimes if you have anything in front of the controller reciever, the controller will miss some beats, not hard to get around though.
I will definetly be playing this for awhile and I am considering buying DLC, which is something that didnt even come across my mind when playing GH. If you can afford the price tag, its well worth the purchase.