I should have a 4000+ by Tuesday hopefully and I might be able to tell you something then. But for now I'm waiting myself. For my budget the 4400+ wasn't worth the extra $20 no matter what.
Due to the motherboard (integrated graphics) I don't expect the greatest overclock but I'm hoping for something decent. As this is my first X2 system I'm not sure what to expect but I'm going to push it for all it's worth.