===================================tonyc:I have the Vyper and my wife has the Gekko. If you don't care about not being able to download the profile then go for the gekko. I like the gekko's phospholuminecent display, you don't have to worry about hitting the light button everytime you look at it at night or in low vis.
Tony.
The wife and both have the Gekko and like it a lot. I'm a Divemaster and have been diving for over 30 years. I've owned 4 - 5 computers over that time from the advanced to the most simple. What I find is that it has a lot to do with your diving style and how much you wanna futz with the thing. If you want a water activated, user battery replaceable, simple to use and accurate puter then the Gekko is hard to beat.
You can definitely get better, more expensive and more complex puters if you want to get into simulation and downloading of profiles. But if you dive 3 - 4 times a year and just want something on your wrist (or in your console) that keeps you informed and safe the Gekko is the ticket.
'Slogger