> I understand that Get Shorty is widely regarded as the first good movie based on Leonard.

Eh? Hombre is one of Paul Newman's defining roles, probably third to Cool Hand Luke and Hud. Get Shorty probably only gets that particular bit of acclaim when people forget Leonard wrote Hombre.

As for Valdez Is Coming, I haven't actually seen that one either, but it seemed to have moderately favorable response. It's unlikely it's in the league of the other four.