My chair is killing me. Probably literally. Lately info has surfaced that sitting for hours at a time may be one of the most health damaging things we can do. And all of us internet junkies and post processing mavens spend a lot of time sitting. If we are going to do it ... perhaps doing it right might help. I've always wanted and needed a really good desk chair. What seems like the decent ones or really good ones go as high as 2500 clams. (ouch) Then again some that claim to be really good are around 1000. Surely China can make a good knock off for 500 or so. Any recommendations?