I really like this chair.  I'm 5 feet tall and the smaller size is really comfortable.  I may add a footrest though for it to work well with the desk I have.  My favorite feature is the arms, which I can swing up out of the way to get closer to my desk and keyboard; but when I want more comfort, I have the option to use them.   The adjustments are really easy to use, unlike some of the chairs that I have had in the past.  The one thing that is disappointing is that you are suppose to be able to lock the back in one place.  When using that option, the back still has about 6" of movement in the back.