This tablet is good, it's quick, excellent display resolution, the battery life is outstanding.
Indeed there is a faint purple radiance around the edge of the screen, but it is just noticble when reviewing an e-book or if the screen backgound is white and after a while you get used to it and not notice it. Having actually been a long time android user I cannot get excited about this tablet, do not get me wrong this tablet has everything going for it ... speed, colors that pop, battery life. It's simply the OS it reminds me of an Apple item, if I wanted Apple, I would buy Apple.
Most of Android OS's have the same underlying feel to it which can have the tendency to be a little uninteresting which is why I've always rooted my devices, I can tailor them as I please and make it my own device, sorta built for me.