Better keyboard ? OB6 or Opsix 61 key?

Sorry if this is a super dumb question..but….

Would it be better to get the large Korg Opsix for use as the main keyboard, using MIDI to control other synths? Or the Sequential OB6?

With the first option I could get the OB6 module and with the second I could get the Opsix module.

So, I think it really comes down to which is the better keyboard in terms of feel and playability. And aftertouch sensitivity.

I already have a Korg prologue but no aftertouch. So I need something else as my main keyboard.