I have a apple Visio pro, I personally think it is a very good device, control by finger is impressive, except it is way too expensive
(I will say I use the double-loop strap instead of the adjustable head-band you see in the ads all the time. The top loop seems to take enough weight off of your cheeks where it's comfortable enough for all-day wear)
If it was at most, the same cost as a Macbook Pro or ideally a Macbook Air I might think about getting one.