I went through the FAQ sticky's ballhead section, found some good information but much of it was from 2+years ago.
i picked up a 3021 b pro about two weeks ago and it's just sitting in my room while i wait for a cheap ballhead to popup in the classified section. but i feel like i'm not doing the tripod any justice so i'll just get a new head. i'd like to get a ballhead that i can use for everything; portaits, macro, possibly some sports, landscapes, etc. I'm just a hobbyist so my needs aren't that specific. my budget is nothing more than 100 dollars, hopefully nothing more than 75 
the heaviest setup that i would imagine putting on it would be a 70-200 f/2.8 lens, 20D gripped, and flash at the same time with some more weight to spare, so maybe something that supports 15 pounds. quick release and panning are really preferred.
any suggestions?

