
the difference between 64 bit and 32 bit is for matching it to your o s ,, if only 32 bit , will not run 64 bit ,, also 64 bit with out 64 bit drivers for hardware will not function properly also,,
as far as controllers are concerened only have used the U-Mix Control Pro and umcp2 ,, so no experience,other than not having proper 64 bit driver for sc and have to use the asio4all ,,or just use 32 bit when useing controller

just a little bit of info i know as to your
