I'd have to know all the asking prices. Given my great luck with a former Jim Lindsey airplane, without knowing, I would say N730MV... but I have heard that they don't really want to sell it and the asking price reflects that. I don't know what the price is, though.
Also, I have to say I really prefer the Sundstrand, although if the Enviro is working correctly, it's probably okay.
But at the right price, any of them (except for the Colombian one) would be fine.
DonV, realizing you never actually answered ... which plane is the one you would buy?
N3NT/N730MV/N695AB/N695HT/N479PT/HK-5201???