12%
Waiting on two OEM Home Premiums in the mail ($117 each).
As a side note, the four reasons I am converting immediately:
1 - A more professional looking GUI
2 - Fantastic icons
3 - Great navigation paths (especially the 'Breadcrumb?' address bar navigation)
4 - Excellent display driver model for smooth delivery of the shell drawing
IMO - the biggest hurdle is the lack of fully compatible software titles that run well on XP. This almost stopped me from making the move until next year, but going back to XP after running RC2 just wasn't doing it for me.
Good luck to all who make the move. 