My mum has a kindle and I've messed with a mate's I-pad. Got an S2 myself and a Samsung R780 laptop (will become relevant in a bit).
Personally I'd always pick a laptop over a tablet for the proper keyboard and better stuff for your cash. R780 is still around £700 same as when I bought mine nearly 2 years back now and for a 17" screen, an i3 processor, 500gb of memory and a graphics card that can play Skyrim. Considering its not skipped a beat and still plays brand new games it was not a bad buy.
Comparing top of the range I-pads and tablets (which peak at around £400) with similar laptops like the Dell inspiron 15 series (also around £400) and Dell wins hands down with bigger memory, battery and screens than the tablet equivalents.
Back more or less on topic:
Looking at the previous link I have to ask why its so cheap so I'll itemize it for you from what I've seen:
No android app store.
With the kit they've stuffed in there I would be very surprised to see it lasting over 5 hours of use despite what they say in the advertising.
With only 8GB of storage your not going to be putting many HD films on there seen as HD and blueray films are almost all above 7GB a piece (Max additional storage is also 32GB making total 39GB).
Finally their quite prominently advertising the external 3D and HDMI 1080p support which is puzzling considering tablets were there to fill the niche of on the go films, books and work. Wierdly enough I've never been on a train, plane, bus or in a car with a handy unused HD monitor to connect to... hmmm odd.
In the end it boils down to personal taste, and as the brother of a computer geek with a built in hatred of Apple products I recommend spending a bit extra and getting a solid laptop that will last you years. Then again it depends on what your using it for and why you want one.
I get along fine with my S2 until longer trips/journeys where I take my laptop for films, work and games.