hey gang
well, as for computers, the most user friendly that i can think of are the SUUNTO dive computers. the ones that are integrated in to watches (Spyder, Mosquito, Stinger, D6 and D9), not just SUUNTO's any watch intergated computer could umm get broken by mistake, not on a dive but on an everyday task, like replacing a spare tire on ones car, falling in the shower or whatever...
on the otherhand, the computers that are situated in the rubber boots, hold better when hit, mostly they also have a plastic protective screen that protects them from scratches, they are also bigger, have more userfreindly displays, in this one i would definately prefer SUUNTO's, GEKKO, VYPER1+2, VYTEC
the Combo computers could be a hassle, i wouldnt trust a computer to tell me my gas ammount in any situation. the handworn big ones can be integrated in to the modular combos at a later stage. just not connected to the gas suply.
the new SUUNTO's have the full or 50% RGBM modes w/Deep stops, thats a plus in my eyes, so do most of the other brands in the market i think.
to choose a computer, it depends, it was said in here by others, your goals.
my first computer was a VYPER, had it for over 4 years almost 2000 dives and one battery replacement, i only sold it to get a VYTEC, i regret that now i didnt know i would move on to trimix so fast and i got a VR3 hehe, should have kept the VYPER for a bottom timer and skipped buying the VYTEC although we dive useing tables, the puter is a saftey net. all depends on where you wish to get to and how long it will take, i wouldnt buy a TriMix puter when im not a technical diver yet.
about the D9, i wouldn't buy one it's too delicate and once they go, have you got a spare timepiece on yourself?
i type too much.. sorry.
just drop me a prvt msg if you like.
good diving all