Mini keys are not as fun or easy to play as full sized keys, but I love how portable this controller is and how little space it occupies on my desk. 61 keys gives me enough octaves to feel comfortable playing with both hands and not feel limited.
Responsive enough to use as a drum trigger. Stable connection. Keys feel nice. It's lightweight. Once you get comfortable with the micro keys you'll enjoy them quite a bit. You can do things you can't do with full size keys. It fits the bill perfectly if you're looking for a lightweight controller to use with potable devices. It works great on my macbook as well.