I would get one with sliders, so Typhoon or Monsoon - much more playable for the minute variations that can send Kammerl into different places so easily
The big advantage as far as firmware with Typhoon is that you can have all the alternate firmware on board at the same time, so you'll have Parasites as well to play with. That's here in case you haven't seen it https://mqtthiqs.github.io/parasites/clouds.html
Typhoon's VCAs come in handy as well for expressive control.
Full disclosure: I'm Calsynth, and sell all of the above, but that's my personal opinion, not a sales pitch. You'll be well served by Michigan if you go that route.