Windows 8 Pro
You know, part of the problem is knowing what to call things in Microsoft's brave new world. I'm having a lot of difficulty deciding what to call things myself.
Not sure if your question was aimed at Michael or aimed at me, so...
For my part, I use "Windows 8 Pro" from time to time not to refer to the device, but as shorthand for "An IA32/64 device running Windows 8 for Intel".
Which may be confusing, but I never said I wasn't a little confused on proper Windows 8 terminology at this point. Microsoft hasn't exactly made it easy to know what they want you to call things, so far.