About 6 years ago I bought a Leica 900 scan. They made a 1200 scan, but who's going to shoot beyond 900 yds anyway.
It's been a great tool without a bit of trouble. Very accurate as far as I can tell. It's darn hard to hold the little square focus point on a pronghorn out there at 500 yds. I found I needed a good rest to do that. But I like the scanning mode this model featured.
You can find them cheaper, but I figured I'd buy one that would last.
Depends on what you want to do. The range numbers on all of them are about double what you can get in real life. As in most things you get what you pay for. Optics really sucks in the cheap ones so you have to carry binoculars along with a range finder. If you pay a lot more like a Leica or Swarovski, the optics are much better. I use one a lot for Prairie dogs and only the 1200 to 1500 range models will work at 500 yards on a prairie dog mound in the middle of the day. Sure they will do 1200 yards at night on the side of house painted white but not out in a dog town with bright sunshine. I finally bit the bullet and bought the Swarovski range finder. It works out to my longest prairie dog shots and has great optics but my bank account still feels it.