Does anyone else have an opinion as to whether it is better to drill a hole into a valve cover or into the intake manifold to the valley to get a source for the PCV valve?

I am considering either the place in front of the distributor to drill and tap a 3/8 NPT hole and add a baffle undernieth or possibly drilling a hole in the rear or back side end of the scripted tin valve covers and welding a tap maybe a fuel line or something onto it with a small baffle welded inside.

Which would suck less oil?

Which would be safer?

Which would be less prone to break or cause an issue?