@jim - do it. I bought the 7" model (£65+VAT) and I use it every day and I'm blown away given the price. It's running full Windows 8.1 and fits in a jacket pocket. I do use it for business but then I have a full Office 365 licence which allows me to use it on up to 5 devices - this is one of them. I run Outlook hooked up to Exchange.
I've been pleasantly surprised by the performance - especially given. It's not going to do well playing CoD but opening Word or Outlook or Excel there's no discernible difference between it any my laptop on these activities. I hope this is the way of the future. Inexpensive and functional devices in a range of sizes all running Windows.
Streams well and watching Netflix either using the Windows 8 app or in a browser is smooth.
I don't use it but did checkout that I'm able to display at 1920x1200 using the HDMI connector even though the internal display is 1280x800. Compare this with my Iconia Android device which is only able to project at the same resolution.
The one thing I had to add is a mouse app. Being a touch screen device, there is no mouse unless you plugin in a keyboard. The touch screen is very good but sometimes is is necessary to be a little more precise and a mouse cursor is needed or if the display is projected onto another monitor (not using the 'copy screen' mode). I found an app that makes the whole touch screen a mouse pad and it works very well when required.