Berlbachs are a relatively inexpensive answer to this problem. I have both wood and aluminum tripods (and I'm picking up another Ries wooden tripod in a couple of hours).
It has been stated earlier in the thread that the wooden tripods (specifically Ries) worked well for the Westons (Edward, Brett, Cole, Kim). The Berlebach is not a Ries, but it is a good wooden tripod that will work for all of the formats you shoot. I use my 3032 for MF (RB67, Yashica C), LF (ToyoView G, Shen Hoa and formerly a 5x7 B&J). It will also support some of the lighter 8x10's and I have used it for my Green Monster (C1 FrankenCamera with a Magnesium back/frame and an AL front standard) on more than one occasion, but only under close supervision in low or no wind conditions. They are stable relatively simple tripods. The Ries is both more stable and more simple but also at least 2x the cost for the legs alone.
Mike