I think Hulu tends to have the older stuff, and I actually like the older stuff like Cowboy Bebop and Samurai Champloo, but we also have Crunchy Roll for all the new stuff. My daughter in particular has consumed just about every anime made since the mid-80s so all she has left to watch is the straight from Japan brand new stuff which Hulu doesn't have.
But Netflix has some of their own anime which you can't get other places.