BBNC wrote:
Get the best brand name tripod you can afford and if you want a ball head, get one with a built in level and a quick detach plate. Bogen (Manfrotto), Gitzo, Vanguard, Giotto are all good. Vanguard makes some nice ball heads at reasonable prices, so does Bogen.
Just personal preference, but I like lever locks on the legs over screw collars.
I would suggest that yoiu check the combined weight of your (camera) body :) plus your largest lens to make sure whatever you buy will support all your setups.
Personally, I'm looking for a tripod with interchangeable heads (Pan & Ball) as well as more than one quick release plates so I can switch bodies quickly as well.