Native Instruments Maschine Mikro MK2 is a MIDI controller that allows you to browse, load, tweak, play, arrange, and automate all sampler, plug-in, and effect parameters. It features 16 bus powered pads, a sequencer, sampler, effects, and a huge library of sounds. Reviews note that the buttons are sturdy and responsive, and the lights look great in the dark. They also say that it's compact and can be taken with you pretty much anywhere.

Here are some insights from user and expert reviews:

Pros

Sturdy and responsive buttons

Lights look great in the dark

Controls almost all aspects of the Maschine software

Compact size