I've used the W/B since they first came out. Since the advent of the new B2 Biscuit (brown & black) it's been absolutely the perfect hunting rest.
Why?.......
Because it's bullet proof, accurate, simple, effective, easy to set up, easy to maintain, easy to shoot, doesn't ripple or damage my vanes in any way, fully contains my arrow with no "slop", no need for any mole skin whatsoever, shoots the same in the rain, ice and heat. No cables or strings to stretch or adjust, no springs to weaken or fail. It's one piece of equipment I don't ever worry about and will be on my hunting bows until something better comes around.
That's why.....