I third the Sig, love mine.
Remember you will get less distance than advertised anytime its not a reflective target or that isn't sunny or foggy. Also, laser beam diverge. They are usually measured in MOA so you can figure out how big of an area that the beam covers at range. If the beam is large enough and you're trying to shoot an object through a gap, if the beam is wide enough and hits the objects creating the gap that's the range you will get not the target. Sig has the smallest beam that I have found and its round, not an oval.
I could get about 1000 yds off of a wet grassy hill side with direct sun and some light fog (pretty horrible conditions for a range finder). Still looking for a place to test it out to a mile or more. I have seen videos of them ranging that far (usually on cloudy days).