Given that I only got it as a possible way of putting in MIDI if I ever got round to learning it, any answer I give may be about as relevant as asking a blind person what shade of red traffic lights have!
Notwithstanding that caveat, physically, it seemed a bit clunky, like the weight was pivoting too close to the hands, which it is of course, compared to a real piano, and trigger-wise, it was not even, though I vaguely remember the velocity curve could be changed. It was rated ‘semi-weighted’. Given that I didn’t really get past first base with it, I didn’t get to investigate its finer ‘features’.
Basically, it was probably the biggest doorstop I will ever have, but that was nothing to do with it, per se!