In my home studio was next to an M-Audio Keystation 49e, to troubleshoot (play another octave to play bass while someone plays the piano notes on the 49th ... etc)

Well when I got it for me was the usefulness especially need to listen to sounds, etc. .. agreement without using the mouse and the piano roll my seq. Is not really a "piano" playing convincing (though his habit of swinging the random velocity, helps me sometimes ^ ^)

Brief for people who have no place, and we need small, go for the "musicians" go your way (unless, like me, I qd the economy to buy a laptop, vs. need a little companion to take the boredom away from your home studio