Realistically, the Xbone looked pretty good except that it's massive. Granted the original PS3 was too but Sony was smart to make it curved like that. Sony didnt want people to put other things on top of their console if people were to; making the PS3 having to be on the top. Whereas with the Xbone, people can put their other dvd player on top or stereo system etc..
The PS4 looked slick and smaller than the original PS3 and Xbone, I feel like its around the same size as the first slim PS3.
The Wii U looked good tho a bit too much curvy around that reminds me of one of those kiddy consoles you buy for kids to hook up to TV and learn stuff. But I guess they wanted to differentiate it from the original Wii being all sharp. (The original Wii was the best looking console this gen, tho with little stuff it packed with made the design alot easier and smaller)