I bought it last night and started playing it. I kinda like it so far, but I'm not crazy about it. From my short play time I thought it wasn't as fluid as I was hoping it to be. I mean there's a decent core gameplay underneath and level of challenge, but I was more interested in the much hyped trance state this psychedelic audio/visual "treat" was promising. I'll play some more later, hopefully high.
Edit: oh yeah, it was the trophy challenges that kept pulling me out of it, they need a disruptive level of focus.