Surrell, when you talk about Sightron and Nightforce scopes, you are talking about two different price points. For the money, Sightron gives the shooter their moneys worth, yet Nightforce has a name for quality(at a price). Someone can correct me on this, but I think that most scopes come with a life time warranty. My only suggestion about a true benchrest scope is that it has a fine crosshair reticle, I personally do not like a dot in the crosshair although some would say that they do like the dot.
As for the broken scope mentioned above, although it took a couple of weeks, it was my understanding that Sightron replaced it with a new one, no questions asked.