Personally Netflix has better movies. Hulu has better and up to date episodes of tv shows. Nextflix does not have ads. Hulu does unless you pay extra. Netflix is $10 amonth while Hulu is $8a month. Personally Hulu is better for current running tv shows since the current episodes are usually up within 24 hours after network broadcast.
I like the quality on Hulu better. I also like the TV shows vs movies. Overall, I do like Hulu better. I just only have access to Netflix right now. Netflix will make me happy when AHS comes out though :)