Personally I don't think Prusa is really as far behind as some people claim. A lot of printers on the market are still single material bed slingers, and it's not like Prusa doesn't have a Core XY, it's just a large and expensive machine (Prusa XL).
Considering they have been in the market a long time and their printers are known to be reliable workhorses, I went with the Mk4.
Been learning FreeCAD myself, recently switched to RealThunder's Link branch. It's not the easiest to learn, but I haven't come across any major limitations either. It's really nice to have software where you can do what you want and know you have full control over your documents.
I should never have to carefully read a EULA to know what I can and can't do with my own designs, or whether or not other people can access my designs without permission.