I'm using a Radeon HD 5570 and I think we all know why I would like to upgrade to Polaris (or to anything for that matter). RX 480 is what I would've bought if I had the money anyway but this way it's free, so why not.
My favorite thing about the Z2 is the waterproofness, the awesome camera and front facing speakers. I've never heard of dbrand before but I'd like to thank them for this awesome giveaway and the cool looking custom skin.