I just got one of these units
there are some buttons that are labeled incorrectly but thats easy enough there are some guys online that have made overlays.
I have not figured out how to map the Function keys yet but I have not really tried too hard.
One thing I will say is to be sure your VSTi’s are not set to read midi in from ALL because the X-Touch send a midi message every time you push a button so I would hit play and hear an instrument… drove me crazy for a day!!! lol