I loved both movies, which were released about six weeks apart! Val Kilmer had the quiet visciousness of a viper, but Dennis Quaid's Doc wore his heart on his sleeve; it was no secret if he loved or hated someone.
Best lines from both:
Val Kilmer: "I'm your huckleberry!"
Dennis Quaid: "I wanted to kill him, but was restrained by...self control."
Who's best? Kilmer, no Quaid, no, aaaaaaaaaaaaaaaah!