I'm considering the new Zeiss Victory II, Leica BN and Swarovski SLC's, all 10x40 or 42. Any experience with these? They are all comparable in price. Right now I am leaning towards the Zeiss cause I have a $100 gift cert for Cabelas and they offer another $100 certificate that you can apply to your next purchase. Or are the Leica or Swaro's that much better to ignore the gift certificates? Thanks.