I got a 3d printer about a year ago and looked into CAD software and came to the exact same conclusion you just did. I ended up using Plasticity. I thiink I paid $150 for a year of updates. But there are still two major drawbacks: first is it’s not parametric, as you said, but more importantly you can’t import stls and edit them. You can export stls, but you have to make them from scratch. You can technically import an stl but it’s impossible to edit. Oftentimes I find a design online but I want to tweak it to my purposes but I can’t do that.

I’d love it if Free CAD had a better UI. It’s just so frustrating and hideous to use.