All together I have found here.
Well, when I sit upright, I can not lean your head (1,90m). My shoulders touch about the upper edge of the upholstery. But that does not bother me because I do not want to stay in the chair.
The work is also very good. Longer days at the desk (sometimes up to 10-12h with breaks), are quite possible without back pain or deadened limbs.
Without rocking function, it would be me, however, but then a little uncomfortable. I move like a little bit to relax and "Kippel" a little. If one, however, the lever firmly (in press), the chair about 2-4 cm game. So you can fix it is not 100%, but still a little rocker.
The star deduction gave the rolls. This I found on the laminate floor is not really suitable. Therefore, I have "= 5 Topstar Rollenset for hard floors VE" ordered me to set and am very satisfied.