>> 65 miles is about the norm for crystal clear picture <<
Two things to say about your statement:
1. 99% of the time, the picture from a digital signal is either (a) crystal clear or (b) totally absent. There are no “in between” pictures like we used to have with analog signals.
2. 65 miles is an exceptional range. Almost nobody will have consistently good reception at that distance, unless (a) they live somewhere like the top of a mountain; or unless (b) their antenna is on a very tall tower, with flat terrain between their tower and the TV station.
(And by the way, I’ve been a TV-DXer since 1952. But digital TV has almost ruined the hobby.)
While comment one is true, it is off or it is on.
Comment 2 is off the mark, reception can be dependent on many things.