There are all types of CAD programs out there, being in the industrial refrigeration game, I produce a lot of P&IDs but sometimes need to create a 3d drawing for my designs. AutoCAD has a P&ID program out that looks great and easy to use but i tend to like working with 3D on Solidworks rather than ACAD (Plant 3D).
I'm just wondering what you guys use, if you do, and if there are any down sides to either program?