The WB is the only rest I will ever use. I don't target practice much and I don't compete in shoots. If I did I might think differently. I hunt. That's all I do with my bow. I crawl through the nastiest reprod, stickers, brush, stumps, etc that you can think of. Half the time I am nocked and crawlin after elk in that stuff. My bow barely makes it out alive and there is no way that a drop away with complicated strings, springs, etc. would make it. My arrows are always ready and I can even keep one nocked while going through that crap. For me it's the only thing on my bow that I can count on to work and not get ripped off by sticker bushes etc.
Now, if you do a lot of 3d shoots or hunt open country have at it. For my style of hunting I gotta have a WB. I don't buy the accuracy thing too much as I can shoot within a pie plate out to about 80 yards. That's accurate enough for me.