Anybody have any experience with the Sightron line of scopes? I had my heart set on a Leupold for Christmas but the wife has informed me that the $600-$700 I'll need for one isn't going to be available. A gunsmith recently told me that the Sightrons are nearly as good as the Leupolds and 1/2 the price. Needless to say, I'm skeptical. BTW: I'll be looking for a target scope w/target knobs for long range shooting. Thanks.