Posture is very important, and my students range considerably in their needs. I ordered 2 of these benches (the more compact "cello/harp" model) so that I could have my piano students and I quickly adjust for sitting at different heights and distances while still managing to both fit behind the keyboard side-by-side.
I like that this compact model is still wide enough to shift on the bench for playing with both hands at each extreme of the piano, while still imposing a small footprint on the floorspace around the keyboard. Another reason this is achieved is by keeping the depth fairly narrow, which does not hinder stability due to the robust design of the legs and lower center of gravity.
The quick adjustment is smooth and quiet, making it easy and comfortable to make fine corrections or experimentations with posture whenever needed. The fact that this shorter bench does not reach as high as taller models is irrelevant, as I have never found anyone who needs the highest position available. However, having the lower range of adjustment is very important for those with taller torsos and short-medium legs. As a cellist, I sit much higher than as a pianist, and this design fulfills both needs beautifully.
Thank you Andexinger and Thomann for offering a great product for a reasonable fee.