Las Vegas, Nevada
Two words - do it ! ! It may seem like a lot of money but you won't regret it. I went with my girlfriend and there were 6 of us in the helicopter in total plus the pilot, Jennifer. She was really friendly and made us feel at home. The views were incredible and as well as the Hoover Dam and other places on way to the Canyon (which is incredible) you get a great low pass over the strip on the way back. You only get 30 minutes on the ground in the Canyon to take photos and eat lunch but it was enough. The company was really professional. A limo picked us up and there were at least three other helicopters doing tours at the same time.