@mattly Ooooh that little brushy thing is clever too!
I have a pair of MOTU 828mk2s. They’re FireWire only, which kinda sucks and is definitely gonna bite me in the ass someday, but for now they still work great and are dirt cheap ($100-200). Tons of I/O, and it’s all DC-coupled too so you can get modular CV/gate input and output going too with Silent Way or Ableton CV Tools. They do work standalone over ADAT though, so even when FireWire goes away they’re useful.