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The relations also seem to require a negative value to position parts on the correct side. Our assemblies are large so we have to zoom in and out and pan like crazy to do simple mates/relations. At least that is what the fundamentals instructor told us. The logic being followed is "I want to do this to that". One of the craziest things is if you have a piece fully constrained in an assembly but select one of its faces to mate a part with, the fully constrained part breaks and moves to where ever in space the new part is. many need to be assembled in a similar or common fashion. An assembly we create will only have 2000 to 4000 parts on average. We have very simple parts to make our assemblies. While there are some advantages in the right situation, a complete loss of intent could be lost. If you move any geometry with the steering wheel, every constraint of that geometry is broken. Geometry can be changed with the steering wheel, (requires a lot of clicks) or with PMIs. So if a change needs to made to geometry just going back and updating a sketch dim is now out of the options list. It is true the sketch relations are no longer an issue because in Synchronous the sketch is discarded. Well while that is an over statement, some of it holds water. The argument that with Synchronous technology the designer does need to worry about history order, sketches and or mates blowing up etc. So now I have a new job where the decision was made as I was hired to go with Solid Edge. Customize menus to speed things up as needed. Always was the mantra to reduce the number of clicks regardless of the system being used. I have been using Solidworks for 5 years and have used CAD systems for the past 25 years.