I have used the Oxygen8 for years -- but I want a keyboard with 3 octaves at least -- it seems that on the surface, the main difference in looking at the Keyrig 49 vs MicroKey is that the Keyrig has more octaves; but I'm wondering why the MicroKey, with one less octave, is the same price? Does it have some kind of performance that is better than the Keyrig?
I'd guess-timate that the Keyrig is about 25���30% larger and heavier than the MK. Plus, the MK is also a 2-USB hub. Korg seems to also be a slightly more expensive brand for these sorts of things anyway.