Pros: CV output & MIDI Output Cost
Cons: Not sturdy. Dropped it once off my desk and 3 of the knobs don't work very well anymore. Difficult to sequence or know the sequence. With no display or LED feedback, knowing which note each step is on is really a guess. It does key lock to mode, but there's not an easy well to tell what the tonic is. ie; I can lock to minor but I don't know which minor scale it's set to.
This would have been killer hardware with a simple 2 character 7 segment at the least. As is, it's ok for quick sequencing if you don't mind making mostly random sequencers.
Also missing many advanced features like step repeat, step velocity, step skip (not mute)
Love my BS. Only wish it had three things: clock out, bpm display and continuous/unquantized mode (free from "scales"). Also the gate out is too weak to trigger some of my envelope generators. That said it's great fun within it's limitations. I oftn use it as master clock for the ipad, running a drum machine and a looper synced to it while it controls my analog synths.
Still sort of getting in the groove for it (steep learning curve) but great and super affordable controller. I use the pads and encoders for Ableton SFX and EFX racks and the nice little CV out control for external analog sequencing.