Replying to Scratch BCs

I can get a pair of scratch bcs (yellow ones) for $499 cdn, but I havent tried them before. Im skiing on the old black and white head mad trix and its time for some new skis.. Im looking for something light (the mad trix are heavy as hell) and something less stiff than the mad trix, but not noodle soft either. I ski about 60% off piste (maybe a little more) and 40 on, im looking for a powder ski that has some good pop for when I am in the park. Do the bcs match what im looking for?? What other skis are there that might fit what im looking for? Also.. whats the difference between the wrs (yellow bcs), the brigades, and the sprayers?