For warranty service, it has to be Leupold all the way for US made scopes. They are simply the best in their service and customer attention. Although I have never had a Leupold fail in the field, I pooched one in the shop by dropping it on the concrete floor. Doh!
I sent it in for repair, expecting to be billed for the work.
They replaced the scope! No charge other than S&H.
Once, I needed some extra dust covers to replace some lost ones (bad day at the range), asked them where I could buy some, and they said, "Don't bother. We will take care of it."
They sent me a bag of TWO DOZEN, for free. Included a note that said, "Give the rest of these to anyone else that needs some".
Amazing.
Leupold also makes an illuminated scope now.
The best illuminated scopes on the market are Schmidt&Bender, then Nightforce.
The S&B scopes are the best I have ever seen or used, period. Very spendy though. Made in Germany, German glass.
Amazing optics, very tough, well designed, and crystal clear in ALL conditions.
I have no experience with their warranty, as I have never seen one fail. (Obviously, I haven't managed to drop one yet)
Gale McMillan was fond of the Nightforce optics. Chuck Taylor has recommended them to me as well.
They are evidently tough enough to survive the big fifty cals., and offer superb lightgathering. Made in Japan for an Australian company. Imported to the US. No warranty info.
A police sniper friend of mine hunts varmints in Alaska during their long twilights, and uses nothing but Nightforce. He is very anal about his guns, so I assume that since they work well enough for him, nearly anyone else would be more than satisfied.