I own a pair of Mavens in 10x and 12x in their "b" series and have spent a good amount of time behind the 8x and 11x as well. Also own a set of the compact c series binoculars. All the b series i've used or owned have been great. They have taken a beating and see a lot of use, weather, etc.. If I had to do it over again I might just have bought the B2 11x. At this point I'm really not concerned with the longevity of the company. I think they will be around a good while. Only con I might have with them is they might be slightly heavier than comparable glass, but optics are the one area I'm happy to give up a few ounces for quality and durability.