Hey everyone, first post here! I'm in the market for a new 10x binocular that will be used almost extensively for muledeer hunting the badlands of North Dakota. I have spent an adequate amount of time researching several binoculars from many companies in the 400$-700$ range (as this is all I am able to afford) and have decided to go with Zen-ray. The problem I am now faced with is deciding on the ED3's or the Prime's. I want to know if its worth paying the extra 200$ for the primes. I have read reviews where people have loved their pair of ED1's/ED2's and weren't thrilled about the primes. Thanks in advance!