The "best" observing chair?

I have seen many versions of the Denver Chair for observing. My main objection with these is that you have to stand up and physically reposition the chair's seat height.
A pneumatic chair would be very nice, but the ones that I have seen only have a height range of about 5 inches. I would really like one that can travel from 15 inches above ground to about 30 inches. Does anyone here use a chair like this?

I don't know if it's the best, but I use the Starbound chair. The padded foam pad is sorely helpful ;-).
http://www.buytelescopes.com/product.asp?t=&pid=2427&m=

Ron B[ee]