I think as far a pure glass quality goes, for a hunting scope, the Zeiss Conquest will probably come out on top, closely followed by Minox and Meopta. Glass quality is subjective, but there are a few guys who have examined them in a laboratory setting and tested various properties of them, there is some good reading on opticstalk.com. The IOR fixed 4x is rated very high and is a great hunting scope also. Pure glass quality isn't everything though, reticle choice, warranty, resale, weight etc all come into play for picking the best value. Like I say, the Zeiss design is very well sorted out and you'd have to spend a lot more to get much glass improvement. For tactical scopes, that is a whole other story as adjustment repeatability trumps glass quality. Most hunting scopes from Vortex, Leupold, Weaver, Zeiss, and Bushnell have plenty good glass for shots out to 500 yards. Right now, I think the discounted prices from CameralandNY and samplelist on the Minox ZA3 and ZA5 series is the best value out there for hunting scopes, also the closeouts on the Zeiss Conquests can be found for a steal. The Vortex 5-15 from midway is excellent when available, as is the 6.5-20. Another hidden Gem is the discontinued Vortex Viper 2-7x32, cameralandny has some. Lots of great glass out there these days for under $500!