I need some suggestions on what tripod to get...for MarkIII & 100-400 IS & 1.4x extender... I prefer carbon because of the weight..& ballhead I shoot mostly birds
You can pick up Gitzo 1227 and 1228 CF tripods used for some pretty good prices now that the new 6X versions are out. Either one will handle the Mk III and 100-400. If you plan on acquiring long lenses then you would want to go to the Gitzo 1325 or 1348 CF on the used market.