For the last several years I've been using a Gitzo 1227 Mk 2 Mountaineer tripod for all my work, including a light 4x5 and pinhole. Ball head is a Linhof Profil 11. Great for travel and light enough for hiking. But now that I'm using a 500mm F8 lens on my Hasselblad I think I need something more robust. I'm considering a Gitzo 2542 or a RRS TVC-33 Versa 3 MK 2. I want to stick with three leg sections. Both very expensive but I've reached the " might as well be hung for a sheep as a lamb" stage of life. I want also to move on to a Linhof Profil III head. Any suggestions?