I find X3c to be improved over all... I'm not sure about the CE issue, but I can say that snap is working fine... It's understanding the way it works that's a little different... See this thread:
PRV Snap Will Not Toggle On/Off is Global Snap If Disabled [Solved] (Sort Of?)
I can't seem to copy the link from this iPad...
...but the gist is that N controls toggling Global Snap which includes a subset control (if enabled) for the PRV... A touch of confusion about the lighted status of each, but understand that snap will only respond if N is enabled, and if you have the PRV snap enabled it will respond to those selections instead of the Global.... Works just fine and I believe at last has things properly connected... Grid follows snap finally follows the PRV Snap setting!
Keni