I've got a 65mm Swarovski, 65mm Zeiss, and 85mm Zeiss.
For something I'd pack aorund a bunch, the Swarovski wins going away. For something to be used not too far from the truck, the Zeiss 85 wins.
The Zeiss 65 is pretty nice, but the extra power of the Swarovski sure is nice (when the air is cool enough to use it).