In my experience using a half dozen or so S2's and several original S3, an original SP and many vintage M's, the Leica's are more consistent. The rangefinder patches on those cameras all had excellent contrast (5-6 M2, 3 M3, AN M4, 3-4 M5). Nikons on the otherhand had much more variation, ranging from good too terrible. On average the S2 has the best contrast for a Nikon rangefinder; probably the best shooter of the bunch. The 1.0x mag viewfinder of Nikon rangefinders is intoxicating though. I suspect an S3 limited is better compared to an original S3, but not as nice as a Leica, either new or vintage, in my opinion, when it comes to contrast of the rangefinder patch. Actually flare and lack of contrast were reasons I got rid of the vintage S3 I once owned. Useable though. Check YouTube for video of rangefinder patch. Separate question whether the 1.0x mag viewfinder offset the lack of contrast. Not for me, in my limited experience.