My bow was actually 1 fps faster with a wb a few years back when I tried it.. I didn't care for it vs the QAD Ultra Rest though.. I use the LD model and it captures your arrow pretty well also. (I removed the capture bar)
At the time there were two reasons I didn't like the wb, one was I shot 4 inch vanes and they would wrinkle them (since switched to blazers) and two I shot camo arrows and I could hear the camo arrows being drawn back as they pulled through the wb (since switched to AC SS's).. So while neither of these would be an issue now at the time I stuck with a drop away for those reasons.. NO way I'd give up my QAD though.. I love it!!