FreeCAD vs Inventor: Which is best for you?

I think some Pros could be: supports the creation of 3D parametric components, which is essential for designing complex objects and assemblies; is available on multiple platforms; is designed to be modular and extensible

Snap function work very bad, dimensioning won't work and things go into error what ever you try to do.

powerful iLogic feature that simplies repetitive tasks

Assemblies always seem difficult, wither mating physicslly or with rules it always seems glitchy and I havent been able to grasp it fully. Despite this I am able to assemble my parts but I can tell the relationships are not full.