I had a Leupold RX II. It didn't do anything very well. I had a hard time ranging large flat objects. I tried all sorts of things from a stop sign to my F250 truck. Nothing registered past 200 yards, even on clear days. It never gave me a reading on any animals. I had two really big Caribou at 70 yards and it never gave a reading. I know it was around 70 yards because later I paced off the distance. No, it wasn't the battery. The thing was new.
It had way too many features also, very confusing to scroll thru the functions.
I bought a plain jane Nikon 600 and it works. No angle compensating features just straight line yardage, simple.
I have used/borrowed a Leica, Catfish is right. Those are some nice and dependable Range Finders. That's what I'd have if I didn't have two kids in school.
On a side note... I've found the customer comments on the Cabela's web site to be pretty dang accurate.
Hope this helps, KP.