Hey @CNCInspiration,
How large is the offset/positioning error you are seeing between two homings / on your parts?
Browsing older posts, it seems like there are cases both of people getting as high as 1mm repeatability error, while others saw much lower error, with stock switches. Some of us have upgraded to proximity switches but I agree with @neilferreri that there has been very little actual data reported about exactly how much more precise they are.
There are mechanical things that can explain differences from one machine to the other too, so it’s hard to come up with a definitive answer.