I was keen on one of these as well and did my research. The quad core processor, 10.1" IPS screen and built-in 3G are the most appealing aspects of this tablet, baring of course the more than reasonable price tag. The only downfall (on paper) is the low-end Graphics Processor The PowerVR SGX 544 (MP1). That's it's only real disadvantage over more expensive NVidia Tegra 3 based devices. It's also not a full HD Tablet (native resolution is 1280x800), but that's to be expected at this price point.
Basically it all boils down to what you plan on using the tablet for. If you want it for 3D gaming, you'll be dissappointed. If you want it for web browsing, movies, light gaming etc. then this may be the perfect tablet for you.