OpenSCAD is great if you follow a subtractive workflow. Define simple stock geometry, and subtract away each feature with slightly wider primitives to avoid zero thickness intersections. This ensures you will not get weird bugs later, and a fairly accurate part for plastic printers.

As many correctly pointed out, STL & DXF are not considered professional file-formats anymore by some people. Some fabricators will not respond to quote requests, as without a Step file they are literately self-confessed useless clowns without Onshape/Fusion true solids handling the ugly math.

It is partially a unofficial standards issue, but customers without Step files may have to look around for fabricators. YMMV =3