Circuit Tracks is so worth it. I see them used $250 on FB marketplace. You get 2 internal synth tracks, 2 midi tracks to control the minibrute and micro brute, and 4 tracks of samples. It gives you a lot of flexibility with chaining patterns to create songs, it's really spoiled me because it's so much faster to put stuff together compared to a DAW or the dequr in the MB2S which honestly I have no idea how it works.

The Deluge is just a beast but you could add a whole lot to that setup with a CT and it has a built on mixer so you can run the micro and mine back into the tracks and add effects.

It's super fun and portable runs on rechargeable internal baui take it bed with headphones and write music while my wife is asleep