Greeting from next door in Ireland.
I do not own a laser rangefinder but one is on my list.
While you are waiting for a more informed reply, perhaps my post will be of interest to you.
From the posts I have read on this site, the Lecia laser rangefinders seem to be the way to go interms of quality of build and ease of use.
I have not been able to track down information on the Osprey models so I cannot tell you anything about them.
The Lecias do not go to 1600M, I think 1200M max,but if you want to go that far, perhaps you should follow this link:-