We had an incredible tour of Red Rock and the Strip. Like most of the reviewers, we did the doors off option (+$40, worth it!) to get a more open experience. As it was Las Vegas and in the 70s, it never occurred to be just how cold it could be flying 800 ft up with the door off a helicopter. That's perhaps my only complaint - and not really one against the company. I suppose if it was the usual 90+ degree day, it wouldn't have been as bad. But at 72 or so, my girlfriend and I froze from the wind!
Other than that, a truly exceptional experience! We got so close to the Stratosphere I could see the smiles on the people's faces - so cool!!
Overall strongly recommend - but if you're going outside of May - September, wear pants and a sweater.