I think the Surface Pro looks like a nice device, and Windows 8 makes perfect sense there. For my gaming rig/media productivity desktop with a large monitor, however, it seems detrimental to me. What has you stoked about it?
Much tighter multimedia kernel, which is a big deal for me. Downside: not on the ARM tablets. So paradoxically, the opposite of your pro/cons. I'm neutral on teh tablets; I have an Asus Eee pad and Android just got a major audio shot int he arm with Jellybean, so I haven't decided whether to stick with that platform or switch to Surface (or indeed an iPad). But for big projects, you need a desktop.