The Pocket Operators are genuinely pretty inuitive, simply because they have so many buttons, and each one has at most two functions (from memory). The labelli

The Pocket Operators are genuinely pretty inuitive, simply because they have so many buttons, and each one has at most two functions (from memory). The labelling is also pretty good for the first 2 series at least, I haven't tried any of the third. That said, the original official case hid the LEDs which reduces usability substantially - the only useful elements on the screen are the BPM and sync status in the corner. My issue with them is the lack of a case makes them not very ergonomic and not very portable, for the sake of an aesthetic. All the after market cases have a major downside: doubling the volume (size), hiding elements of the interface, requiring gluing components, price, etc. Also they're pretty expensive for what they are - you really want at least two, by which time you could buy a Volca. I've thought about desoldering all the buttons and pots to build a more durable unit with bigger mechanical Cherry style switches and bigger LEDs, but I'll never get around to it.