I have a Newcon 3000 and it will range to 1600+ yds in any condition. After that, cloudy days is best and I have ranged to 2655 yds on a small sagebrush, 2 days in a row from the same place and it was the same reading. I have ranged billboards on a cloudy day to 4061 yds. On reflective things, it will go 3000 yds.
Kirby tried it out against his Swaro and it did out produce in a few cases, but is it worth the $? I like it better.