Seconding the Organelle as the OP-1 alternative. I haven't got one, but I have definitely considered pulling the trigger. (The "ultra-budget portable" option i

Seconding the Organelle as the OP-1 alternative. I haven't got one, but I have definitely considered pulling the trigger. (The "ultra-budget portable" option is to get a Casio SA and a digital FX pedal. Combine that with a line-in to a DAW setup, and a lo-fi instrumental album is totally within reach.)