I am not going for the early adopter role here, but if this beauty here gets good reviews (in particular for being stable and reliable) then I will definitely become a buyer soon:
The Axiotron™ Modbook™
The Modbook is the first and only tablet Mac® computer solution! Ideal for: Mobile Users, Business Professionals, Artists, Students, and Technology Leaders.
• Write and draw directly on screen!
• True pen & handwriting recognition
• The ONLY Mac solution with WAAS enabled GPS Built-In
• Aircraft grade magnesium alloy for all terrain use
Designed in California, the Modbook’s condensed form factor and integrated pen-based user experience makes it the ultimate solution for applications and situations where a keyboard only gets in the way. more info