I have the Asus model and almost all documents open. We have a few that didn't and for that, we're back to a Windows laptop or tablet.
Frankly Windows 8 RT is so restrictive that we can't go near that at the office. Lighten up Microsoft and maybe we'll look at it again. Windows 8 RT is nice that you get Office.
These tablets are not cheaper than a laptop so I wonder why you are looking at them. What's the attraction?
http://www.amazon.com/Transformer-TF201-B1-GR-10-1-Inch-Tablet-Amethyst/dp/B0067PLM5E lists out the tablet and dock for just under 1,000.