The quick summary for operation of the double button is a great solution if you want to fix to get shot and still very comfortable. The order-to-reach working height plus head and camera is perfectly adequate for people over 1.85 m. Air offers here the solid processed center column adjustment, the stability - unlike several other stands - does not detract. For very tall people or special height requirements to the length can accommodate up to ceiling height (2,50 m with head and camera incl. Battery grip ;-) through the screw caps in the lower sector then even.
Settings, comfort in handling the dead weight and the extreme height adjustment make this device for me to no. 1 among the stands. However, if mobility and thus low weight has in mind for the offers at very high user comfort which is also patented Neotec Manfrotto on, which can not compete in terms of torsional rigidity for lack of weight and lack of cross-bracings, however, especially when the central column is extended.
Two small suggestions for improvement: The strap is very narrow measure of the width of the small portion of the belt, so you have to thread a bit awkward about the hemmed him when attaching and detaching. A simple clip connection would remedy this situation. In addition, a foam padding in the upper part of two tripod legs would be desirable for cold days, as has even the lower-priced Manfrotto 055XPROB.