I use this throne all day long, and it's awesome! Super comfortable and stable. I leave the wingnut below the throne itself a bit loose so i can go around, but if you tighten it up, it won't move on you!
It has a memory lock which you can use to set your height and never worry about it and i find it very useful because when i go on gigs i disassemble the throne entirely in 3 pieces (base, height rod and throne) so it becomes smaller in height and i can store it in a small hardware bag which i use to carry relatively small items. The only thing "wrong" with this throne is it's weight. It's super heavy! But it has to be in order to be so stable. It can go really high (i've used it as a timpani stool). By far, the best drum throne around in this price range!