Binocular choice

[wailea4me]

I have read the binocular posts on this site and decided on a Bushnell H2O 8x42 set that is waterproof and fogproof. Apparently, there are 2 syles - porro prism and roof prism. Any advice on which is better?

[Rocky252]

Wikipedia has an excellent explanation of the two designs, and their respective advantages and shortcomings.

http://en.wikipedia.org/wiki/Binoculars