Recommended head for a Manfrotto 055XPROB?
Answers:
Go to the Manfroto website or a pious photodealer and agree on which team leader you really NEED.
I assume that the ref is for a tripod, if so the choice is usually between a Ball and socket come first or a container and tilt come first.
Size of any depends on the size- bulk of your camera.
Best counsel is other step to a suitable camera shop and try them, within is nought better than hand on experience.
Hope this is agreeable.