Well, I own three Redfield Revolutions and two Vortex's.
I've had occasion to test the Vortex warranty with a very minor issue recently. I contacted their customer service and explained the issue. The person I contacted handled the call courteously and ask me to return the scope. They paid all the shipping costs both ways and returned the scope in less than two weeks. I can say I was more than a little impressed!!
I have many hunting rifles and use them often in very extreme weather and terrain. They get beat around a lot and I've even destroyed two scopes completely after dropping them. In each case, no scope could have survived the fall. I've had occasion to test the warranty's of both companies and have not been disappointed with either, nor have I heard from anyone with a legitimate complaint about warranty from either.
IMHO, if a scope will hold its zero consistently and dependably, as both of these product have proven they do, never fog up in cold weather as I have experienced with a few very expensive scopes, they are the only way to go for a heavily used hunting rifle. I need them to draw light well, and they do, but a little more fuzziness than a $1000+ dollar scope has doesn't bother me in the field one bit.
The relatively new Vortex and Redfield products are each aggressively seeking a larger market share and I believe they are seeking it with quality and attractively low prices. IMHO, they don't deserve to be put in an inferior category common to so many products in their price range.
I believe they both provide the scopes we all look for... quality construction, bargain pricing, an exceptional warranty and products we can depend on...
JMHO.....