T-Flex CAD is an amazing parametric MCAD software, for my opinion one of the best Parasolid based products available in the world. Just for your knowing, has been the first Windows based parametric software presented in the world. The only (obvious) reason why it is not so popular in west countries, is that the software was available only in Cyrillic until some years ago, and that, since it has been used for many aerospatial and even military project, it was not possible to export it until the fall of USSR. Actually T-Flex is available in many languages (English, German, Italian, Polish, Turkish etc.), and there are many optional modules (CAM, Analysis, Dynamic Analysis) available as well.