I'm using a Gitzo 1228 which is working out well for my new 4x5 and it's been great for my Nikon SLR+ 80-200 and my medium format gear. The Gitzo prices are really crazy, but I'd take a serious look at the Feisol carbon fiber tripods that Kerry Thalman is offering at Reallybigcameras.com--an APUG sponsor. Frankly, it looks, like you get 90% of the Gitzo at a third of the price. They have the equivalent tripod to the 1228 for $175 without a center column (which isn't recommended anyway). They just came out with their latest generation and are offering the old prices for a few more days--so I'd jump on that deal and look for a used head.