I’m not being paid to say any of this, I haven’t spoken to any of the companies listed here except for Noisedeck, which while is made by two really awesome people, also gets a pretty nasty review here because it doesn’t work for this use case. Sleepy Circuits, which I’ve only talked to. I don’t even own their hardware. Furthermore, I have paid my own money for Visual Synthesizer, Cathodemer, and KodeLife.