My experience with the game today has been that GHTV is the dealmaker.
It's the best thing to ever happen to Guitar Hero.
I'm just turned off of the prospect of 'grinding' songs to play other songs and/or paying and not having any 'ownership' of them. At the time I made that post I was also still under the impression XBLG/PS+ was required (though I've since found out that's not the case). I had cancelled my pre-order based on that but would probably still have it and give the game a shot otherwise.
I'm just legit surprised this is in the 9+ camp w/ a lot of reviews, considering, but then again I mean I really liked DJ Hero so I had some faith in the devs.