I have been suggested a choice between Gitzo 5542 LS legs and a Manfrotto 057 CF legs. I currently use a M20 Markins ballhead on my Manfrotto 055 aluminium tripod. My longest lens right now is 300mm f/4 which I use with 1.4x or 1.7x TC. Bodies are D7000 and D800 (Just parted company with my D700, to pay for the D800). I may later on add a longer lens.
Considering cost and weight, what would be your suggestions? thanks in advance.