Just posted about this topic on another forum. Here you go: I've owned the Leica Geovid BRF's, the Swarovski EL Range, and the Zeiss Victory RF's. I currently have the new Leica Geovid HD - B's on order.
*Leica Geovid BRF's - Mine were lemons. Went back to Leica 3 times and never did range anything very well. I have two buddies with the BRF's and they have had no problems and love theirs. Excellent Glass. No angle comp.
*Swarovski EL Range - I bought these because they are the only of the "Big 3" with angle compensation. Awesome glass and great rangefinder unit. The downside to the Swaro's is that the minimum range is 33 yards. Not a big deal for a rifle guy, but for a bow guy in the mountains, this is not a good thing and frankly, is a big deal. The rangefinder also had some issues when the temps were below 20 degrees.
*Zeiss Victory RF's - Best rangefinder of the three by far. The beam divergence is better than the other two, but optically they are not as good as the Swaro or Leica. Mine would pick up ANYTHING and ANY yardage in ANY temperature and do it VERY fast. If angle compensation isn't a big deal, this unit is tops IMO.
Overall, you can't go wrong with any of these units. They are all optically fantastic and each ranging unit has it's own intricacies. For me, to rank them in order it would go - Zeiss, Swaro, Leica. With that said, I do have the new Leica Geovid HD- B's on order.