I had the maven C1 8x42 and I really liked them. In comparisons with my friend who had the vipers in 10x42 we preferred the C1's.
I sold the C1s because I needed the longer reach and now have the b2 11x45s. They are superior to the C1s for sure. True edge to edge sharpness. People talk about shallow depth of field which I get from using them. I haven't used a bino with deep field of view, but I am content zooming in and out as I scan the mtn.