With the better glass offered inthe Sightrons, the higher mag is significantly better in precision aiming.
If you want/need a wider field of view, then the SIII 6-24X50 will offer you higher resolution and clarity which makes LR viewing that much better.
For pure paper punching, higher mag with clear glass is a wonderful combo and once you start, really hard to go back to lower mag scopes.
Remember they don't make super high mag 50X, 60X and 80X scopes for nothing
Jerry