As much as I want to replace my PX-3S with the new PX-5S, I would really like to read the SysEx sheets and the manual. I won't be using internal sounds, controller only. But great to know if my rig fails I have redundancy. But 1 large for a 4 zone 88 note controller is great, would love to read about the differences. Thanks So Much JV Star Of Stage & Screen