I'm still using my old GKF Golden Premier prong rest. It's ancient, as arrow rests go, but it hasn't given me a single reason to even try to find something better.
...and here I thought I was the only left shooting this "relic"....
My thoughts tend to mirror many of the others here. I have set up thousands of WBs on various bows. I cannot think of one occasion where a tuned WB caused someone to shoot worse than either a conventional rest or a drop-away.