MPK Mini Plus : Great unit

This is a solid midi controller. I don't think there is any competition for this keyboard currently (that also fits my desk).

37 keys. Quality pitch+mod wheels for the best expressive playing (beats touch strips easily). Plus a joystick. Good pads that are very fun to play. Encoders feel just right.

The keys are small or medium sized. I like it because it allows for more keys in a smaller space. In case you are wondering:

White keys are ~8 cm tall, a little under 2 cm wide

Black keys are ~5 cm tall (playing area is 4.5cm, 5mm of slope), about 8mm wide

If you plan to play some Chopin this is not the keybed for you. You will want something that closer resembles a piano. But you need more than 37 keys for that anyway.

For everyone else this should be more than fine. The key action feels good and consistent from left to right. I enjoy playing the keys and I'm not bothered by anything

Overall a great and practical device that I can only recommend.