Vortex Sound Research

Been eying some of those roland boutique modules lately. Seems like a lot of the complaints people have are the limited voices, but that's not really an issue for me. I've heard there comparable soft synths, but I prefer having physical knobs and sliders. I like that they all have internal sequencers, too.

Which model is the most versatile? The music I make isn't too far off from krautrock, so I don't need crazy leads or anything.