BTW, the reason I was asking about the B2 and B3 is that I am in the market for new skis. Since I had such a great ride on the B3 last spring, I wanted to hear from those who let it into their quiver. As many do, I have been seeking the perfect all-mountain, do-anything ski. Realizing there are tradeoffs in whatever you choose, I went this route: I just bought a pair of 2004 K2 Axis X (181) to be my everyday ski, as I demoed it for a day at Squaw and loved it for many reasons (edge grip on spring ice, very good bump ski, chatter only if I went really fast, etc). So now, I am looking for a powder/crud ski. However, I need that ski to be able to ski bumps, not chatter my teeth out of my head on hardpack, and be quick in the trees, as that is where the powder lies as the day unwinds.
The skis that I like so far are: Atomic Sugar Daddy, Salomon Pocket Rocket, Dynastar 8800, and the B3 (I have not tried the B4). There may not be enough difference (in width) between the Axis X and the B3 to make it worth the investment, but the B3 is so versatile and easy to ski, I am tempted. That is why I am interested in it's performance in crud, as I find that to be my biggest challenge.