Cass trust me on this... try to find a Pa50SD in good condition. Or if you're not wedded to the KMA o.s., a used PA600. You'll be way better off. The boards you mentioned are entry-level. They reuse the KMA operating system, but have removed some features and didn't add any that I know of.
What Korg should have done was to move the MicroArranger OS into the Kross2 chassis and call it the MiniArranger. 9 lbs battery power, full features, and full-size keys. THAT i would have bought!
Edited by TedS (02/09/20 11:04 AM)