I base my opinion on personal experience.
A while back we had the opportunity to evaluate the Newcon class one, eye safe, lasers. If memory serves me correctly, we played with the 1500 and 2000 models. We took them in the field and gave them a "real world" shakedown. Simply put, my opinion of their "overall" performance is that your money is better spent on the Swaro or Leica. The Zeiss was not out at that time.
For the class one laser, easily packed for wilderness hunts, I use the Swaro... been using it for years. Depended on it for many Sheep hunts in Alaska. Have the Leica as a back up. We all know that the class one stuff has it's troubles in varying light conditions, but the Swaro has earned it's keep in my pack.
When packing in for dedicated long range hunting, or shooting extreme long range 2,000-3,000 yards, I use the Leica Laser Locator. It's similar to the Vector, but no longer available. Ranges 4,000-6,000 yards and cost over $10,000.