This is the one time I probably wouldn't consider the Switch a console, unless you are referring to how it looks in its dock.
On topic, I'd go with the Wii U. I think it looks pretty slick. Like the Wii, but I prefer the rounded design. And... it's not like the Wii U is gonna get praise for much else... so why not let it have this one?
I do like the Wii U's design yea, although it might be a case of actually looking a little too sleek. Iirc, it's so thin laying down that it basically looks like an overly big external hard drive someone just left laying on a shelf.