I used to work at a standing height adjusting desk and I loved it.  As I sit a lot during the day to work, I wanted to get my own height adjusting sit/stand desk and chose this one. Again I love it, it is so convenient and it helps my legs and feet as well as the circulation. Great quality! I purchased the 55" L x 23.5 " D the only reason I gave it a 4 is because I wish the table top was just a little deeper.