I'm going to purchase a Casio Px5 and I want to be sure of a couple of things. 1) I understand that I can use knobs and sliders to change some midifile parameters as: pan, expresion, volume, and then récord those changes in my sequencer, am I wrong? 2) I'm pianist, and I've received very good opinions regarding the hammer feel of the keys. Can anybody tell me if as pianist I'm going to Feel very good playing this piano? I don't have the chance to check any privia where I Live, so I'll be very grateful to receive more opinions. Thanks in advance!