At work they gave us standing desks and tall ergo chairs similar to this one. The reality is that I never lower the desk, and only sit on the tall chair when I am tired, and that works great for me. So at home I ended up getting a tall desk from craigslist and an ergo chair which works the same in the end but at a much better price.
--------- Andre Sanches "UNIX is friendly, it's just picky about its friends"