1. Its more of a "what will i look the coolest owning" versus the performance.
2. I havent seen a set of cams for a B-series cost less then $400...a D-series cam @ $400 will be as big as teh motor! LOL You get more for your money with a D. And you dont spend as much. My stage 3 cam for my A6 cost $185, whats a stage 3 cam set cost for a B-series? Probably $350-450...not worth it to me.