The PC, especially the ridiculously cool update that they did to it a week or two ago, is the best right now, imo. Anyone check it out lately? Amazing. Looks completely different. One thing I'm enjoying, which is completely cosmetic, of course, is they it displays information when you've got a title paused, hazing everything out. Very nifty.
Looking at Win 7 video above, looks a lot nicer (UI wise) than the Iphone one, which is impossible to use.
The weird thing is, despite having an Apple TV, we use the Wii for Netflix a helluva lot. At first, it was because the "Just For Kids" interface was exclusive to the Wii for a while, but then they put that in the PC and AppleTV versions 6 months ago. But sporadically, Apple TV can't connect to Netflix, at least not very well. It either takes forever to load a movie, drops us out of a movie in the middle, or fails to load at all. And this isn't HD video we're streaming here. We're talking Barney the Purple Dinosaur.
And when that fails, you know what we do? We have to load up the Wii, which connects and streams just fine. So that proves it's not our internet connection (which is 20m down, 1 m up, btw).
Hopefully, if the Wii U works as dependably as our Wii, only prettier, then the AppleTV is going up on ebay.