As a bow hunter I've owned laser rangerfinders since they first hit the market. I owned Bushnell models, Nikons and now I'm on my 3rd set of Leica's. I first owned the 800s, then the 1200s and now the 1200 CRF. I'm completely hooked on them. The thing that I like about the Leica's is that is has a real optic, unlike most others where you have to view through a LCD. The LCD darkens the image significantly and clouds it with tiny artifacts. During bright daylight this isn't even an issue, but during low light or night time they're nearly useless. The Leica's are bright and clear and can even be aimed and operated in the dark.
The LCD models display black digits and can't be seen in low light without the assistance of red backlighting on the LCD. The Leica's displays red digits against a perfectly clear background. Your image doesn't wash out with a sea of red LED light when you activate the laser, thus destroying your view of the target for 3-5 seconds.
Another feature that I like about the Leica's is that they're more ruggedly constructed. The Bushnell's seem to be more sensitive to shock. The alignment of my Bushnell 800s got knocked out even though I had been careful with them. The same thing happened to my Nikons years later and had to be sent back for warranty repair. When they lose alignment your aiming point through the viewfinder doesn't match the point of impact from the laser. It's really annoying when then happens especially when you know that they haven't been dropped or anything. I've had no alignment issues with Leica and the point of impact matches the reticle precisely. I've even ranged off of a power line (a single wire) at over 400 yards.
As far as the advertised specs go. Leica is similar to Surefire that their performance is underrated. No, they won't range beyond the 1200 yards stated, but they operate very well under a wide variety of conditions when the others struggle a bit. They seem to range at long distances in bright daylight off of very small targets. They range well through rainfall to. The Bushnell, Nikons and others seem to be more cranky about the size and color of target especially during bright daylight. My hunting buddies have all switched to Leica after using mine a few times. They eveb range off of Paloverde trees at maximum range in bright saturated light. My Nikon's would not do this.
Unlike flashlights, you're probably only going to own one rangefinder. It's really worth the extra $100 -$200 dollars to get something that is going to give you decades of good service instead of dealing with a piece of equipment that's going to be occasionally aggravating. I don't think you could go wrong with Leica.