In terms of value/$, the Zen Ray ED3 are a good option. If you have any issues at all, they will replace them. The bird watching forums speak highly of them.

A friend of mine raved on his ED2s and once I compared them to my Viper HDs, I had to agree. It was a little disappointing, so I sent the VHDs to Vortex and received a new pair that's still sitting in the box. I also bought a new pair of ED3s at the same time laugh