Because the suitable height of the standing desk is everything for users' comfort, convenience and performance, for teams with diversity in body height, we recommend the SmartDesk 2 Premium for its better height range (from 25.4’’ to 51’’) in comparison with other kinds of SmartDesk. With greater height range, one standing desk can fit different people, therefore it will be easier for your company if there are any changes in office layout or personnels. About the desk top, depending on your office area, you can choose whichever more suitable: the basic desk top (53’’x29’’) or XL desk top (70.5’’x30’’). They are all the same on quality, just only different in size.