RE: Zeiss vs Swarovski and Kahles
Currently on my "shooter" guns I have several Zeiss Conquests, Leupold Vari X II, VX II and VX III, and three Swarovskis. I have owned a couple of Kahles but prefer Conquests to them, so I sold them.
My all time favorite scope is a Swarovski AV series 3-9x36mm, and the runner up is a AV 3.5-10x42mm. For my eyes, they are the best.
I firmly believe that in hunting optics that you DO get what you pay for.