I have owned and used Leica BN and Ultravid, Zeiss Victory HD, and Swarovski EL Swarovision.

For my eyes I believe the Swarovski are the best. That may be different for other people's eyes.

As to value, it depends on how long you plan to keep them. If you buy an expensive pair of Binos and you keep them for 20 years they will be cheap, especially if you take good care of them.

I have never had any fogging problems with the Swarovski els