I'm not one for the argument that three sections are always better than four sections. In lower quality tripods, this may be a relevant criterion to consider. However, with the Gitzo line, I don't see it as being a deal breaker for me. I went with the GT2540 Mountainer simply because it folds up a few inches shorter than the GT2530 (now 2531). For my style of travel (backpacking), this makes a big difference as there's less chance of me catching the tripod head on branches or rock walls. And with the G-locks, opening is extremely simple...I can set it up in under 10 seconds. Compared to a friend's GT2530, I don't see any noticeable differences in stability. The 2540 also holds up extremely well in rushing water, from a stability standpoint. When people wonder why Gitzo's cost a bit more than their knockoffs, this is just one of the reasons why.


