Free: Contests & Raffles.
Vortex Razors combined with the doubler and a tripod will cover everything!
With 15 power, I'd definately use a tripod. That and weight are the only downfall's of higher powered magnification.
Depends on how stable you are and how you plan to use them. For me 15 is too much unless I'm using a tripod. Even in the Swaro 15's my eyes get tired quickly. 8X or even quality 10X don't bother me nearly as much. While still hunting I'm always looking through branches focusing beyond them. Quite often that leads to spotting deer and elk very close to my position. The wider field of view and the easily steadied lower powers do this better than the high power glass.I will take a 15 power bino over a 25 power spotter any day though. Especially when I'm spending long days looking at goats or sheep. I also prefer the 15 power at 3-D shoots to spot the money ring.Myself I keep buying 10X binos but find I'm using the old 7 & 8X more often. And I can count points and judge goat horns better with my old high quality 7X than most average 10X glass too. The 15X Swaros spend most days in my pack never to be used. And when I'm cutting weight I keep my water and dump the 15X. If I had it to do over again I'm not sure I would buy them. Even though there has been many a long difficult and dangerous stalk opportunity on goat that I avoided by being able to field judge with the 15X realizing I didn't really want that animal.If you are only going to have one pair of binos for hunting I would go 8X or 10X before going with the 15X. My for what it's worth.