Vortex Viper 15 x 50s'? in Rifle hunting for Coues Deer Posted January 17, 2012 · Report reply I have the 15x50 HD vipers and love them. I also have the minox 15x58's. I bought the vipers when my 10x42's were stolen out of my truck and needed a pair to wear around my neck. I already had the minox 15's but can you really have too many pairs of 15's? what I like about the vipers compared to the minox is ther size and weight. My minox are great but they are tanks and can make a pack quit heavy after a few miles. the vipers HD's are bright and clear and are well worth the $$$.