I don't own any Kahles, but I have gotten to peak through them before and they are good. I found this tid bit out recently that I didn't know about the scopes.
This is from the opticsplanet website.
Quote:
The Kahles family managed and ran the company until 1974. With no heir in the family to take over the company, an ailing Fredrich Kahles sold the business to his friend Daniel Swarovski. From 1974 through 1988 Kahles was a subsidiary of Swarovski. In 1989, Kahles Limited G.M.B.H. was registered as an independent company within the Swarovski Optik Group. Now marketed in the United States as a brand within the Swarovski Optik North American product line.