buy once, cry once..
I also suggest that you think about what you are buying them for?
I bought the Diamondback Votex 8powers years ago and couldn't be happier.. Why?
I wanted a smaller full size set, i wanted a good field of view, especially in low light. I intended to use them to search the shade and brush before ending a stand to spot coyotes and bobcats that were just sitting there. ( you would be surprised at how many times, before i get up, i scan the area real quick and look. Many times there is a coyote sitting next to a bush and I had never spotted it) So i wanted a set for this. I have found that in the open with 8 powers i can spot coyotes a long ways off. Before i could ever hope to shoot at them. So they work for me. and i have used them to watch open grass before sunrise, well before i could spot them with the naked eye waiting for sunrise.
If i was using them to spot game, or hill top looking for Elk, not so much.
Figure out what you want them for, and get the ones that fill that need.