I want a scope for my Long Range Rifle and I'm thinking about this 2 scopes. The rifle is a .338 EDGE and I expect to shoot @ 1200 y ds or more. I already own a 6-24X50 FFP PST and absolutely love it, but I'm considering to give the SIII a try. The SIII doesn't look as impressive as the PST, but I know looks are never a good way to evaluate a scope. Which one should have better glass? Which one tracks better? Which one is more rugged? I really like the idea of having the FFP that the PST offers, but it's not a "must" for the scope. Specially if the glass is better in the SIII line.