my suggestion,
Look at the Mares Puck, its really easy to use and presents pretty much all the info you could need on the main display. Easy to read digits and large display are aditional benefits. Not gas integrated (no wireless) and is wrist mount.
Has an ascent rate monitor and does nitrox. Personally my computer's ascent rate monitor (not a mares puck) is too sensitive to be useful. Whenever I raise my wrist to look at it, it detects the abrupt depth decrease and says I'm ascending too fast, then I have to wait for it to chill out before getting an accurate reading so I just ascend slowly while watching my depth.
Pretty much its a good price, easy to read, does everything you need, except gas integration.
I personally got a wireless wrist mount and love it but its new so when batteries become an issue it could get sketchy.
