I own both and have to say it's a tough one. Price factored in it's BSD easy, but fun factor is pretty close. I think doing the triple stack has a similar 'aligning the stars' feeling to a good 5x multiball run. BSD is not very friendly to novice players, but it makes up for that with mist multiball. Whitewater doesn't have the intensity, but makes up for it with the crazy ramps and silly fun.