They are "Special Editions" of the PC350 and PC360. They look about the same except for the outer grills have been changed. They should all share the same drivers. The PC350/350SE are closed back and the PC360/363D are open back. The open back version usually gets superior reviews as it has a superior soundstage.
All of them are plain stereo headsets except for the 363D which uses a USB audio interface with Dolby processing.
So with the PC363D edition, It's like the PC360? They have a few more cosmetic features?. . As far as the USB audio interface does that mean I cannot use my mixamp or soundcard?
Are there any headsets that are better or close to the PC363D