Although this program is showing its age in terms of features and interface it is much, much faster than it used to be. I use the program primarily for quick layouts and for helping visualize ideas. The dimensioning features are great (once you get the layer scales figured out and correctly configured). I was having a problem with v5.61 running on my MacPro, so I went to their tech support page and put in a tech support request. They responded in less than 8 hours with a link to a new version v563 which they are about to release officially...problem solved.