I've been playing a medieval World of Darkness recently, instead. I find it's working out way better than 4th edition, and it's a nice change from 3rd. If I went back to D&D, I'd prefer to just stick with 3.5. I don't want to bother with the feeling that I'd have to convert a bunch of material - like the classes from the splatboooks - to fit the feel of PF.
Some of the Pathfinder stuff is kind of interesting, but I just can't see bothering with it.