The sound of the 888/999 is beyond incredible (I make techno/experimental electronic) and totally instantaneous. Your mind is blown from the moment you turn it on. The filters/OS/interface are a bit buggy but the sound is so addicting you forgive just about everything.
The MD is seriously fun to work with and you can get sounds out of it you won’t get anywhere else, though it’s hard to get the analog crunch of the jomox (unless you route it through a sherman etc.).
For live use the MD is unparalleled. The jomox would make me nervous as the centerpiece of a live setup (though it did pair nicely with the OT for a DJ set once).
The AR is the best of all worlds but is a bit of a yawn to work with in anything but a live setting.
You might also consider getting an mbase/mbrane if you’re planning for pure studio use. I also often pair my mbase with my MD for live sets to really get that analog boom combined with the MD’s incredible sequencing and synthesis.