I had one of the Winbook tablets (it is dead now because of a faulty mini-usb charger), and for the price, I thought it was a decent device as well. But I guess we will just have to agree to disagree. In the year I had it, there were plenty of times I wished the cpu was faster, but never even thought about the igpu. To be fair, maybe a better gpu will help where it felt the slowest, like loading intensive web pages, but I think that is primarily a cpu problem.
Maybe i was not clear, since i dont have a notebook, for the year and half i own this tablet im been using it for university work outside my home, things like pdf reading, Autocad 2014, Codeblocks, Netbeans/JDK, MS Office, etc...
And sure, i whould have liked to have better cpu perf, but then again its a tablet... the fact that i could do all of that even better than college computers (E-350) was already awesome.
Also did gaming in my free time, and belive me, that was the weak link.
Browsing was tricky, so it was youtube, for example youtube ran best on IE, and browsing Google was MT, and Firefox ST... Youtube on Firefox and Google where CPU-only for some reason, maybe because it was using HTML5, not really sure.
You could be also sure no ARM tablet, no matter how powerfull, could do that.
But CT now has a powerfull IGP and a weak cpu to drive it... its not really balanced, i think Intel went too far and hurt cpu perf in the process.
Still Z8300 looks good on sub$100 tablets compared to Z3735, no so much to Z3736s, altought the base clock may still play in Z8300 favor.