Best... Houston’s Maltese Falcon with Humphrey Bogart as opposed to the early 1930 Ricardo Cortez version.
Another best, TRUE GRIT. NO Glen Campbell or Kim Darby to mess it up.
Worst remakes, too many to name. Winchester ‘73 TV version, same for RED RIVER TV version.
Thankfully no one has messed up SHANE -yet.
“Pale Rider” was to some extent a remake of “Shane”. It wasn’t bad tho.