Even though the leak was outside the tank, I replaced the fill valve
with the 400A Fluid Master.

It seems everyone is happy with these things, but I found this one to
be verrrry loud.

Googling, some sites suggested high water pressure and indeed, this
toilet is closer to the water line than any other toilet or sink.
I lowered the pressure, I guess, by closing the valve most of the way,
and it takes longer to fill, longer than it used to, and doesn't make
as loud a noise, but it still makes an annoying noise.

Instead of one noise, like wter going through a pipe, like the Melard
Model D made (a valve of simliar design and also made mostly of
plastic) the FluidMaster makes that noise and a second one, that
sounds like water is spraying hard all over the place (even though
it's not).

Has anyone else complalined about this?

Any suggestions how to stop it?

Any suggestions of a different brand without this problem? One
url suggested Corky, and I looked at that, but the FluidMaster and the
Melard had the advantage of easy replacement. Just twist or
release, and pull up, then push the new one down, on the base that
stays there. No tools needed,