Sincityskydiving is the way to go in Las Vegas. Just jumped with them for my first tandem jump the other day. I did my research and found they are incident free, and I felt they were very safe and professional. The instructors are really cool guys and made the experience memorable. I would definitely choose sincity again. Also, if you compare them with Las Vegas Extreme Skydiving who is out of the same DZ, there is no comparison. Watch the youtube videos and you will see that sincity makes it more fun, and they are incident free unlike Las Vegas Extreme Skydiving. The videos are also better at sincity, but they are $79.