1) The user-interface of this program makes it easier than others I have used before! You click where items go, select them from available list - etc., 2). Easy inputting multiple units & prices per material so one set price rather then two if they use different size screws or whatever else. 3.) Very easy interface which works great with an office laptop when doing more time intensive tasks (like making roof diagrams/preparing building drawings), 4.). Fast computers, fast browsers mean there…