I ended up buying yesterday.
I got the $149.00 office master task chair, BC44 armless.
It is 2 way adjustable (seat tilt and height) and back height is adjustable with a knob on the back. Also, it's not as squeeky as a lot of the sub -$200 chairs.
http://www.office-master.com/productsbctask.html
One day I will get the knoll chair,.... man it is nice.