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You willDry Diver:I don't dive Nitrox. Actually, I never really considered it.
mempilot:Aeris makes their version of the VT Pro in a different package. The screen isn't as nice as the VT's, but it is cheaper. I think the guts are identical.
Zippsy:You will
DandyDon:Yep! 50% more bottom time when you get deep enough that you run out of time before you run out of air.
I really like the Oceanic Versa Pro. All sorts of beneifts, see http://www.oceanicworldwide.com/2004/p_computers_versapro.html
Bought mine at Leisure Pro, with scratch guard, for $280.