Greetings!
I bought the Nikon Waterproof 800 yd. model, don't remember the model number but it's VERY nice. Seems to run almost forever on a single lithium battery, it's lightweight and feels good in the hands, and I don't have to worry about rain or water. Not much more expensive than the non-waterproof models either.
If I had it all to do over again, I would have waited until I saved the extra $450 it would take to buy a Swarovski Laser Guide rangefinder... I saw one a few days ago and I was VERY impressed... the best rangefinder I've ever seen. Quite pricey though...
Best wishes,
Bawko