All of the Premier line that I have looked at or owned are great scopes, and you sure can't beat their lifetime, doesn't-matter-if-you-are-the-original-owner-or-not over-the-counter replacement warranty! I have currently 2 of the 4-12x50, a 6-18x40, and a 6-24x50 and have had 2 of the 4-12x40 scopes in the past, all have been great scope, without exception and they are priced right to boot!! Sightron, Leupold, Nikon, Burris and Swift are the only non Euro scope mfrs to offer this type of warranty. All of the Swift scopes I have came off ebay, the waranty is still good to me, all I have to do is send it to Swift in California or take it to a Swift dealer for exchange....but I've never had a problem with them, either! great deal!!