I was actually considering between the ZRS HD and Nikon Monarch. We definitely like the 10x. But I am not so sure of the narrow viewing angle of Monarch when I tried it in store.
I love the ED2. I initially got the Vortex Razor. But after my friend showed me his pair of ED2, I decided to return the Razor the last min and ended up with ED2. Looking through it is like watching high definition TV for the first time. It was a wow, if you know what I mean. I think you are going to like it.
