I've got a leica 1200. The optics in it are OK but it's no substitute for a good pair of binos. It's adequate for lasing but I wouldn't consider it adequate for glassing. I've never looked through the swarovski rangefinder nor used a monocular for glassing so I don't have anything to compare to the leica 1200 from a monocular point of view, but I do know that it doesn't even come close to my swarovski 10x42 slc's for image quality.