Hi everyone!
So I don't own either of the modules discussed (although I'm hoping to get an A-199 next week), but as an owner of an A-188-1B, I'd like to chip in with a suggestion: if in doubt about which module to get, make sure you at least have one module with some kind of feedback. It really opens up a lot of possibilities, and allows you to make the kinds of sounds that are very difficult to achieve in software. Being able to put, say, a filter in the middle of a delay or reverb unit's feedback loop really gives you a lot more flexibility than with a hardwired unit. I think it really gets into the heart of what a modular system's all about.
All the best,
Zoë.