Loved it!
I got the "wind dancer" tour booked through my hotel this and it was perfect. The snack stop at the bottom of the canyon was worth the price difference. 500$ a head is not cheap but so much worth it if you arent planning to be in Vegas more than a couple of times.
Our pilot, Cody, was great too. We were a group of 4 and the helicopter fits 6. We had a chance to rotate so that everyone could sit in the front (2 seats). If you can, try to be in the front a the very beginning so that you get the best view from the dam and the entry into the Canyon. And sit on the left on the last leg to see the strip better.
Go for it!