I have been playing around with Freecad, although I haven’t used it enough to give a good opinion of it. It does look like it has a lot of potential and it exports out to obj, stl, ply, and other formats.
Well, more and more software is going to be subscription based and/or cloud enabled/hosted (paid for or otherwise). So it’s best not to paint yourself into a corner, idealogically-speaking.
BricsCAD is still a perpetual license (for now). Relatively inexpensive, very similar to AutoCAD if you’re in the DWG ecosystem. Popular in the CAD community so there’s a lot of support. You might have to walk files through an extra format or two to get it into Blender.
Fusion360 is free for hobbyists and low-profit companies (pay attention to the terms of use). That is better if you’re more in the MCAD/3D printing ecosystem. Not too certain about export formats, if OBJ isn’t available common neutral formats like IGES should be.
If I need CAD to Blender I use MOI3D, it’s fairly intuitive, simple controls and it can export STL and OBJ for direct import into Blender. I found a copy for 200 bucks online and I’ve been very happy with my purchase.