I've had the Nemo for about 9 months now, have about 50 dives on it. It's been faaannnntastic. I have no complaints.
As for the main gripes I hear about:
The numbers on the screen are actually quite large, especially the most important info, ie time remaining at depth.
it's true, it doesn't show surface interval, but you don't really need it as the dive planner on the watch will tell you how much time you can go down for your next dive at whatever depth, and it constantly adjusts itself while you're offgassing (for example, when you first get out after dive one, it might say you could do 20 mins at 50', and then if you check it five minutes later it'll tell you 25 mins at 50', etc.). For logging purposes, you can easily do the math from the computer's logbook, just look at dive start times and do some quick arithmatic.
You don't have to press any buttons underwater other than the backlight, unless you want to change current dive time display to actual time (ie six minutes into your dive or to four o'clock pm), or check what was your max depth so far.
I find that it's four buttons are very easy to follow and the menu system is very simple... i fiddled with it for ten minutes and figured it all out. with a quick review of the manual i was 100% certain of all the functions.
It doesn't seem to be too scratch prone, although mine does have a few ( i do a lot of dives in springs and caves though, lots of rocks ). even though, it hasn't made the display any harder to read.
the rgbm is awesome.... safe, but not too conservative, which I like. If you don't like that, it's very easy to adjust the watch to a safer set of calculations, you just change your personal safety preference up or down depending on where you want to sit on the algorithm.
Lastly, it's a freaking sweet design... very flat to the wrist, and looks great out of, and in the water.
that's all i have for now... but if you have any questions about the nemo let me know, i'll be happy to answer.
