Ok, I'm looking to upgrade my binos. I have vortex viper 15x50hd right now. I do a lot of glassing here in az in the desert. I'm finding I'm losing a lot of light before the guys with the kiababs. So my question is, are the cabelas euro hd 15x56 much better than the kiababs, or would my money be better spent on used swarovski slc? Thanks for the advice.