I'll be different and say Leupold. I have a Rifleman and a VX-1 and both have never let me down, rain, snow cold etc. Quality optics for sure. Read this if you want to compare the Leupold's. You might also compare the warrntys.
The Leupold Answer Guide
What is the difference between Rifleman and VX-I?
The Rifleman scopes are black matte finish only with a sleek, ergonomic maintube. The scopes have a fully coated lens system using a single coating of magnesium floride, providing 82% of the available light back to the eye. The adjustments are Silent Friction style hunting adjustments and each hash mark increment on the dial is 1/2 " inch moa at 100 yards. The scopes wide field of view, generous eye relief, and the rapid target acquisition of the Wide Duplex reticle will be appreciated. The scopes are rugged, reliable and waterproof, and covered by the Leupold Lifetime Guarantee. The VX-I scopes are offered in black gloss or black matte finish. The scopes have a standard multicoat lens system, providing 86% of the available light back to the eye. The adjustments are Silent micro-Friction style hunting adjustments and each hash mark increment on the dial is 1/4" inch moa at 100 yards. The scopes offer wide field of view, generous eye relief and are sold with the Standard Duplex reticle or the Wide Duplex. The scopes are rugged, reliable, waterproof and covered by the best customer protection in the industry: the Leupold Lifetime Guarantee.