In the time that this question has not been answered someone has already nearly sold me on getting a behringer u-phoria model. I really don't see any reason why I shouldn't at this point... cheaper NEW than buying a used mbox2, is and will be supported, compatible with everything out, and does even more at a higher quality level...
https://www.amazon.com/Behringer-UMC...HORIA+UMC404HD