Novation Launchkey Mini 25 MK4

I've bought this in addition to my full size masterkeyboard, just for the controls (endless pots!), which enables you to control all sliders and knobs within Ableton, including all plugins, with ease (and without annoying value jumps). Because of its size it fits perfectly between the other gear on my desk.

A big plus for me is the option to programm custom modes, via Novations Components software, with which I've managed to operate the alt functions on my Polymoon pedal, via MIDI.

Another plus is Novations quick response to any questions or feature requests you might have. A good (online) manual is included as well.