I have the Pentax DCF ED's and have had no problems with them but I have only had them about 8 months or so and I use a bino chest pack in order to keep them cleaner. No problems yet and I am impressed with their clarity. I was told that the Nikon EDG are very clear as well as the Vortex...
I realize that I am new here but I have used the Leica's, Zeiss, Swaro and many others. For clarity, I would definitely go with the Swaro or Leica, they are going to be clearer than the others. I would imagine that you will only be getting a 5-10% difference in quality over the rest. I have...