Quite honestly, I think the original version of the system looks better, especially my Darth Vader version but I think the slim looks pretty slick. The PS4K… it looks kind of off, especially those three layers, but I don't play a system because of how it looks. Hell look at the Wii U, one of the lamest designs ever.
The PS4 has a great future ahead of it and I'm glad to be an owner of it.