I have the Vyper Air and love it. It had an integrated compass which I find very convenient. It has a large readout so is easy to see and it is backlit as well. It would be best to shop around on the internet and your local dive shops for the best pricing. You may be able to catch it on sale like I did and got it half price. Mine also came with the data cable to download the divelog to my home wecimputer.