I've probably used more Leupolds than other brands. Most of them are the old Vari-X II; one's even older, being pre-Vari-X. I guess the 3x9x40 is overall the most useful. Walking hunting at 3X; sitting-hunting at 5X, +/-; sighting in and load testing at 9X.
I figure any scope that works just fine with over 3,000 rounds of '06 bouncing it around can't be all bad. And surviving unplanned descents of steep slopes, or bouncing in a pickup on jeep trails is pretty good testing, as well.
You're from BATFE? Come right in! I use all your fine products!