" I have heard there are finishes to put on that reduce the appearance of water spots and make it easier to keep them looking nicer. "

Showerguard. It is not an applied p[roduct. It is made into the glass as it is floated. Permanent part of the glass, never needs to be reapplied.

We have these and I don’t want to admit how infrequently I actually clean the glass…. But - we also squeegee after every shower. Most glass companies that do shower doors will recommend. They will also tell you not to use a glass cleaner with ammonia.

A P.S. on squeegees - get a plastic handled squeegee, not metal. If you drop the squeegee it can chip the shower floor tile, and can be a big “ouch” if dropped on bare toes!