Free: Contests & Raffles.
Out of the three high end binos I wouldnt buy anything but SWAROVSKI
I've owned several different bino's over the years Bushnell, Burris, Bausch & lomb and now Luepold. I have only looked through Vortex Vipers a couple of times and never seen Zens so I can't tell you an opinion there but I can tell I'm not going to make another mistake on my next purchase. I'm not as happy as I thought I'd be with my Luepolds at low light, They are very clear glass for the money but I'm saving my pennys and it will be nothing but Swarovskis for me next time! Which I'm hoping will be before next season
I bought a pair of Vipers last year and was really happy with them. Then I did something really stupid. I looked through my boss's SLC's . It was right before dark and what I thought was a mound of dirt was really a buck. I am now saving for a pair of Swarovski's. I have probably spent enough money on bino's in the last 12 years to have bought a High end pair. Save up the money, bite the bullet and then you will never have to buy a pair of bino's ever again.