Swarsoky hand down for quality and clarity... JP.
It's Swarovski.
I've had all three, Leica Ultravid, Swarovski EL and Zeiss Victory. I kept the Leica, it was the clearest IMO.
The Swaro seemed to have a bit of a yellow hue to it and the "Hawk" symbol at the front of the bridge fell off not long from new, so I wasn't too impressed.
The Zeiss was good as well, but just a bit behind the Leica in clarity, at least when I look through it.
The best resources and reviews on the web are from birdwatcher websites, do a google search.
One thing I wished all bino manufacturers would do away with is the twist up eyecups, hate them. I have an old pair of Zeiss 7x42 BGA's that have the far superior solid rubber eyecups. They can be folded down for eyeglass wearers. Let's face it, you're not gonna wear glasses one day and go without the next, so why the quick twist cups? OK, rant off............
You won't be disappointed in either the Zeiss or Leica. FWIW, check out Cameraland on here, they have good deals on binos and they can ship them to Canada. If you want Leica, see if he has some older non-HD Ultravids, they are great, I don't think the extra $$ for HD is warranted. My $.02.