I've never owned a laptop or ultrabook or tablet or phone but I'm quite tempted to get a Surface Pro with a TouchCover when it comes out if it turns out to be the best X86 portable Win8 device AND it works well with ASIO4ALL.
@Jim Young: Hi Jim, actually, the guy in front of me in the line for the build keynote somehow had a surface pro (along with a surface and another W8 tablet) and was showing it off to the people around him. He wasn't a Microsoft employee, but maybe was a partner or someone working on some sanctioned software for surface or something. It looked pretty nice, the pen functionality was very smooth. I will definitely be getting one!