I am a PDMS consultant and was also part of some of the beta teams for Autodesk during the first releases of AP3D. It really is an apple and oranges comparison. When it comes to plant design software there are two categories in my opinion. There is the small plant, low cost, low admin level no frill software which consists of AP3D, AutoPlant, OpenPlant, PlantSpace, and Cadworx. Then there is the total packages for all projects which can do everything cradle to grave as far as integrated DMS and PLM solutions. These primarily consist of PDS, SP3D and PDMS. It is hard to really do a comparison on those two, it primarily comes down to what you want to do with the software and what is your current workforce. I hope this helps and if you have any further questions I would be glad to help.
I am a PDMS consultant and was also part of some of the beta teams for Autodesk during the first releases of AP3D. It really is an apple and oranges comparison. When it comes to plant design software there are two categories in my opinion. There is the small plant, low cost, low admin level no frill software which consists of AP3D, AutoPlant, OpenPlant, PlantSpace, and Cadworx. Then there is the total packages for all projects which can do everything cradle to grave as far as integrated DMS and PLM solutions. These primarily consist of PDS, SP3D and PDMS. It is hard to really do a comparison on those two, it primarily comes down to what you want to do with the software and what is your current workforce. I hope this helps and if you have any further questions I would be glad to help.