Old two handle showers do not have the pressure balanced, so called anit-scald feature. As such, they are not allowed for remodel or new construction.
That said, I have an old PP windsor, and am in no rush to update. Toilet is in the shower room, so no one flushes the toilet while I am in the shower!
Today, I would recommend a Delta 1700 series, which has separate controls for temperature and volume.