I still play. Then again, it's the only game I play competitively at all, but I mostly just play for fun.
I play on Expert, and Guitar Hero II is easily one of my favorites. I'm not a huge fan of Neversoft, so I don't much like any of the games after Rock the 80's, except for the GHIII. World Tour wasn't very good.
I'm a Harmonix fan, so go Rock Band/RB2!