This has probably been covered before, but I am looking at the zen ray line of bino. My concern is I am trying to decide between the 10x ed3 vs the 10x prime hd, wondering if there is a reason to get the prime. Is it worth the extra money for the prime? I have heard good things but have no experience due to the lack of being able to get my hands on any locally. If you have any info regarding the two choices I would appreciate any info good or bad. Thx.