I also think a lot of the Vortex. Wife & I took an inside passage cruise recently and we carried a Swift Audubon 8.5 x 44, and a Vortex Viper 6x32. I like a 6 power for many hunting situations, and the Viper is a real good one for a very reasonable price. But, the Vortex is NOT the equal to a Swift Audubon. And, the Swift is -in my considered opinion-the equal to nearly all those big names we know and respect! And I've carried some of the world's best glass on 3 sheep hunts and one goat hunt....that's where the rubber meets the road!
To add the icing to the cake, I recently found a Swift Audubon 7 x 35 on e***. I never knew they made more than one Audubon, but this was one from the 70s(I think)which was found new in the box in storage in a defunct optics shop(wow, how'd you like to have found that inventory? That's like dyin' and goin' to Heaven, huh???) I got them for a great price and they are simply pristine. Spent several hours comparing the view to my other Audubons and the Vortexes. Sorry guys, the Swift won again!
You can pooh-pooh them all you want, I'll stick with the Swifts AND the Vortex Viper 6'es. This is not coming from someone who hasn't owned the big names with their wonderful warranties. Leica, Swarovski, Zeiss....they truly set the standard, and they continue to uphold it. But...the Swift Audubons and the Vortexes I have tried, are also meeting that standard. And, I can buy 5 of those for one of the others!(so, the gold-standard warranty is somewhat less important!)
One thing that has muddied the waters: the top line European companies pretty much only supply one quality binocular. It's their flagship, it's their best and it's their only! Pentax, Nikon, Swift, Vortex, and many other are putting out a lot of lesser- quality glasses for the mass markets. You can't judge such glasses against anyone's top optics.
Hint: if you use the phrase "a great glass for $100", or $200.....we're not talking the same thing. In my opinion, you won't find a great glass for less than about $350, and it will be labeled Swift Audubon, or Vortex Viper.
I've shown mine to scores of folks who had binos around their neck, and I've NEVER had anything but very positive responses!