I have FP-10. I was considering FP-30(X) but ended up going with FP-10 plus Pianoteq. I am really happy with it so far. The set up works well. I run Pianoteq in a headless mini pc. I can also stream audio from mobile to the pc via bluetooth audio to play accompaniments.
Only downside to FP-30 is that the sustain pedal is not really continuous. Midi out for sustain has 3 distinct values (so not much different than on/off). But I can connect the pedal directly to the pc (with an extra convertor) if I need half pedaling. Which seems years away. So much to learn before I outgrow this