SOOOO many people get hung up on... but this *brand model* will range xxxx yards no worries... or quote manufacturer range numbers etc...
All my experience, mirrors that of EVERY other expereinced user on this topic. That is, if you want to range LOOOONG range, the vetronics units are THE BEST. Downside is you have to take out second mortgage to own one, they start at $3700 and go up from there.
If your a mere mortal, then you need only look at the LEICA, SWARO and ZEISS units, all the others are a waste of money in comparison. Broz is spot on regarding splitting hairs over these 3 units. Leica has the best beam divergence, and i agree that this is by far the most important consideration for hunting requirements so the leica CRF1600 gets my vote under $1000. The swaro will range a tad further, but who cares if your not sure exactly what your laser is bouncing off? The zeiss suffers the same fate as the swaro, and doesnt range as far, but its cheaper for those who are on a really tight budget.
For those of you that think you cant afford any one of these units, SAVE YOUR MONEY until you CAN afford one of these! dont buy a lesser unit if your serious about long range hunting.