Since you are thinking about the Manfrotto, I'll tell you my story. I think I had the Canon 650 film camera at that time, but it may have been a 10D. I had it attached to Manfrotto's first carbon fiber tripod, the Carbon One. The legs were spread out fully to the click stop, but in the tallest position. The center column was either fully down or minimally raised. I stepped away from the tripod and a mild gust of wind blew it over backwards. The camera popped open at the seam. I pushed it back together until it snapped together. It had a small mark or two on it, but worked fine ever since (as related to this incident). It seems that in order to obtain and advertise the tallest possible height, the legs do not angle out very far on the first click stop. It's fine indoors, but I'd never leave it unattended in this position outdoors unless it was secured with additional cords, weight, etc.