I would never trade my big weighted piano and synth keys for those little keys...
Nor would I. Afterall, in addition to the microARRANGER, i still appreciate and play my Steinway B Grand too, as well as the Tyros 4 with significantly smaller and lighter and comparatively toy like keys too, but there remain situations where taking even a Tyros 4 portable arranger not always convenient or pratical, and I won't even begin to consider moving the Steinway even an inch across the room. The microARRANGER definitely fullfills my grab and go take anywhere need I appreciate. And yes, coming from a classical piano background, I concur with Saswick that the tiny keys, though not idea, are still quite playable. -Scott

Bottom line is the old saying " horses for courses"