Vortex Optics 1500 & 1000 RangerFinder is the best 1000 yards range finder with an accurate distance and additional advanced features to make your shooting experience amazing. Moreover, its fine quality manufacturing lets it withstand harsh weather conditions.
The "best" at what price range? Are you looking for something simple to just get your the range data or do you need a device that calculates the ballistic profile and the MOA/Mil adjustments? There are some high end rangefinders like the Sig Sauer Kilo2400ABS rangefinder that does all the ballistic calculations for you to make your life easier if you plan to shoot at long range. Its not cheap at $1700, but long range shooting isn't always a cheap sport.
get a used leica 1600 off longrangehunter.com. I think I sold my last one for 300 bucks I think. german or chinese? take your pick. you dont need all the ballistics stuff just need to know how far away your shot is at. thats for hunting.