PS4 slim is the best. It no longer has fingerprint-magnet gloss, huge blue light strip that is distracting when you want to play in the dark, nor does it look like a giant black eraser anymore. I really like the compact size and subtle ness of the design.
Ugliest is PS4 Pro no contest.
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.