I moved to a carbon fibre Manfrotto 055 3 section about 18 months ago with no regrets at all. It seems stable and solid and the fairly thick legs resonate less than you might think . I did consider Gitzo too, but both my researches and questions on Photo.net could not unearth any credible information to the extent that the big extra cost would make any difference to image quality. Besides which I don't like Gitzo leg locks and much prefer flip locks, and if thats an issue for you choose your brand carefully. Otherwise people tended to suggest what they had ( which I guess is better than suggesting brands they haven't ) so the support tends to mimic brand share.