For private use strictly FreeCAD, at the job Inventor Professional. While FreeCAD is ‘not there yet’ in many regards, it’s a great piece of software -if- you accept the flat learning curve and invest time. But I understand what you’re saying. If you already have a solid understanding of CAD-basics, you rapidly understand what the programmers want to achieve and get there relatively fast. If you expect tabet-esque convenience (which I think from a professional standpoint should not be the goal for a parametric modeler) I get that people get frustrated.