The WB is a good rest, and can be made very good. It can tear vanes off if they are not applied properly, and some vanes wear more quickly than others. You can loose speed, but than can be reduced by triming one or both sides of the WB. It can be a bit noisey to draw with some arrow types, but not nearly as loud as a bare tm hunter style rest. You can also modify the rest so that you can top load your arrows instead of pushing the broadhead through the bisquit.
It can be very accurate with proper arrown and vane selection, and is pretty much trouble free as it has no moving parts. I have found that it tends to "fix" poor arrow flight, or that is it can can you false readings through paper. When tuning with the WB don't settle for anything less than perfect bullet holes at 3, 8, and 15 feet prior to going out and shooting groups with broadheads. I thought a bow was tuned, but wouldn't put broadeads anywhere near the field points( they did group decent enough though). I played with the rest a bit and go field points and broadheads grouping together. I then went in and found the bow still shooting bullet holes at all three distances, but these holses were more consistant. What I mean by that is that the holes were "cleaner" and I had no "flyers".
The WB is best used with durable vanes, as feathers tend to "fuzz" up and I think that in the rain feathers and the Biscuit will be a problem, not becuase either is bad in the rain, but they just don't work well together when wet.
I currently have a golden key shootout I plan on testing side by side with the WB. It also holds some promise, and may end up being a better choice. I would recommend getting the deluxe WB as it offers much easier adjustments when tuning.

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS