I'd like to hear more about the Asus tablet.
Currently using a Lenovo x200 tablet and MotionComputing LE1700. Both have been upgraded to Win7, both work pretty well. I take notes in the exam room in OneNote, then import that as an image file to AC. Later I use that as my crib sheet to finish the note in AC -- often on a different machine.
With very rare exceptions, I find that handwriting recognition doesn't keep up with note-taking, so doesn't work very well for actually completing the chart in the exam room, and with rare exceptions, my patients don't fit very well into templates, so I have evolved a sort of hybrid system. Still a work in progress.
The Motion Computing tablet is surprisingly heavy, very hot after a while, and has a very short battery life. I have a separate charger, and I have to swap batteries pretty frequently. The Lenovo is lighter, but bulkier, not so hot, and the battery life is better.
How does the Asus work? -- I heard you can't swap batteries, even though the charge life is poor.