I beat my friends Leica 800, 1200, and Leica duovid 1200 with my Newcon 2000Pro.
Ranged further in ALL WEATHER CONDITIONS.
Leica DONT RANGE in raining days, or snowing days, and if you get strong sun, the ability to range with leica will go down drastically.
I did a review not long time ago, but if you do a research in this forum you will find it.
The negativ part with Newcon 2000Pro is the aiming square is a litlle to big, and with my device I have to aim with the bottom line of the square to get proper reading. AND WORKS ALL THE TIME.