Vortex Sound Research

As the title says...

Looking for a 2nd synth to fill the gap in a live setup with Circuit Tracks + TD-3. Ideally something that can do dirty midrange bass (ala Bad Company UK style DNB). 80s style digital dancehall bass be good too. I also make a lot of house on the Circuit.

I already have a Minilogue so don't really want too much overlap there and prefer to keep it in the studio. This is for the road. Something small, cheap, and portable would be nice. Looking at the Volca Bass or Bass Station II.

Any other ideas? Thanks!