Myself and my 5 year old son did this helicopter tour and we really enjoyed it, its well worth the cost the 15 minutes seemed like a long time and to see New York from the sky is a life experience, the tour was professionally run and I don't have any complaints, they even take a photo of your party next to the helicopter and you can then purchase the photo afterwards.
My daughter took this tour on her own, as I had previously done it before. The piolt was friendly, helpful and informative. She was well looked after. Not any waiting around, in up and out.... Although don't arrive to early cos they won't let you in, and there is no where for spectators to wait but out side along the riverside. Again a definite must to see the big apple from above....also easy to get taxi just outside when finished.
We have booked a 15' tour, but the actual duration was 12'. The shorter tours costed less money, but we payed for the more expensive without having the full tour duration.