That's what Heidi V. Anderson wrote in the October 2004 issue of Smart Computing Magazine in an article titled "Triple Your Fun -- Three 3D Drawing Apps For Less Than Three Figures". Smart Computing reviewed "dozens of CAD programs" before selecting the final 3 for the article. They wrote a well researched review, giving CadStd Pro an overall score of four out of five.
Even though CadStd Pro is a 2D program, it was included in the comparison because of its ability to create 3D isometric projections from orthographic views. See Tutorial Chapter 5.
You can purchase Smart Computing Magazine at a newstand, or view some of their articles online at smartcomputing.com