I purchased the computer one year ago and love it. It has all the features you need for advanced diving including nitrox and yet is easy to operate. I suggest with any computer, learn to use it correctly. It's not complicated and is a game change in diving. My cert level is Rescue diver and I would buy another one if I needed to.
PS: carry an extra battery. You can change it your self and I had to once after I first got it and only a few dives, likely a cheap stock battery. However the one I installed in still registering strong after 10 months of regular diving. Every diver should have a save your dive kit which includes a battery. (Posted on 10/18/2015)