Whats The Difference Between Rpht And Cpht Whats The Difference Between These Two Scopes?

Whats the difference between these two scopes? - whats the difference between rpht and cpht

I am seeking a Leupold VX-3L 4.5 TE14X56 Long Range Scope (66715). What is the difference between this and a Leupold VX-3 Long Range 14x50 Scope (66490)? The most obvious difference is the 56 and 50 years. The VX-3 is also cheaper at about $ 250. VX-3L is much better than it is worth the extra money? What differences there are others?