I agree, the MK1 models are now "classics"; not outdated. Better collect them now before they become rare
Same exact sound and OS, but just a slightly different form factor. Reminds me of MPC 60 and MPC 60II, same machines on the inside, just different look.
Another question is, can the MKII models fit in a rack? I don't see any holes in the sides like the MK1 models have. That might be one difference.