Currently playing around with the 7" version, at the price offered I felt it would really be stupid not to.
It's a totally different meta to other tablets, think more laptop. With a mouse and a cheap Bluetooth keyboard it becomes a modern-day replacement for the old netbooks but with significantly more power and ability that you can also use as a tablet.
Office runs smoothly and gives full options.
For gamers who cares that you can't access a large tablet store when you can access Steam?
Micro-SDs show as drives - which adds a lot of flexibility.
It's a PC, you can't just plug it into your desktop to sync. The OneDrive space helps though.
All-in-all I'm fairly happy experimenting with it so far.