Beauty is in the eye of the beholder. Wiggy, whom I have a deep respect for, has heavily criticized the system for being one of the ugliest things he's seen. There is no general agreement on if the system is good or bad looking.
Personally, I think it's so-so. There are some elements that I really like about it, like the controller cradle in the back and the order of the carts putting Famicom right in the front, but I don't like the color schemes (Gray, black....purple? red or blue would have been a more fitting color) and absolutely HATE the idea that the controller cords on on the sides and not on the front of the machine. As far as I'm concerned, this is a carry over of one of the worst design choices of the RetroN3. Most people, including myself, plan to keep their Retron5 alongside other consoles like the PS3 or Xbox 360 in a row. but the RetroN5 won't allow you to do that because it has to be greedy with its sides leaving room for controller cords. Hyperkin should have put them in the front and they loose major points in my book because of this glaring flaw that must have been deliberately designed that way.
I'd love to know what the hell the designer at Hyperkin was thinking. Venting concerns perhaps? I suppose I won't have any idea until I get mine and tear it open.