I am with Gunnar on the Schoeps CMC64/ORTF for a run and gun setup. The venues around here are all bad. And as it is not a recording session but a live gig I get to show up a little early, run up a mic stand, hook up the interconnects and hit the "on" button and then set levels on the fly. I pretty much know about where they will be for the groups/rooms around here, though.
I am going to record a Bach chorale this fall and will want to use ORTF plus omni outriggers. I will practice a bit first with the mixer and mics so I am not a complete plunk when I do the chorale.
As for conversions, yes, on the computer it makes no difference if it is an even half/double or some weird number. It is all being done in binary anyway. And binary only knows two states: off or on.
Cheers