Computer advice for newbie please

Having recently got my OW certification and just come back from my first
time diving abroad I now want to buy my own computer.

From the bit of research I've done already it would seem to make sense to go
for one that is nitrox enabled (thinking for the future). I don't want a
watch type but would like it to be wrist mounted, and with the facility to
upload data to my pc.

I want my purchase to be an investment and so don't necessarily want to just
head for the cheapest. Neither do I want anything too fancy either (so not
worried about the capability to switch between different air mixes, for
example, as I have a disability and could only ever cope with one tank
anyway).

Any advice as to models, pron/cons, where i might find any useful info,
would be greatly appreciated.

thanks.

Jan