Went here for the WWE Royal Rumble, and for the Fanfest/VIP stuff the night before. This is a pretty nice arena. Our seats for the Rumble were fantastic, and the line of sight and acoustics were both good.
One issue I had though was the imbalance of prices between food and beer. Beer is RIDICULOUSLY expensive here, even by stadium/arena standards. $11.50 for a Blue Moon ... you have to be kidding me! Food, on the other hand, is reasonably priced, with a nice variety of options. I got a pretty decent cheesesteak for a $7 - I've paid more for worse in a regular restaurant. And the chicken fingers/fries combo was ample and worth the $8 (Yes, I was hungry).
I imagine this is a great place to catch a NBA game ... too bad the Suns suck.