I have really enjoyed these binos. Clear picture, good fov with 8 power, and none of the fogging problems I've had with lower end vortex binos. I've been using vortex products for about 5 years now, and I don't think I would purchase anything from them that was below the viper line. These seem to be a major step up in build quality and optical clarity from the diamondbacks. They aren't swaros, but for the guiding I do they are totally up to the task and seem to be a good value for mid range glass.
Their warranty is great, but unfortunately I've had to use it on 2 rangefinders (stopped working, eye cup fell off), a pair of crossfire binos that fogged up the second you touched them, and a diamondback scope. On a recent elk/mule deer hunt, I watched my hunting partner's eye piece of his 12x50 diamondbacks fall off while they were just sitting on a tripod.