A techniques effectiveness get’s increased by WBTB. I recommend NOT to use WBTB as a technique alone, but combining it with another technique. In terms of effectiveness: WILD is most effective indeed. It has a 100%-successrate, but there’s a catch to it: WILD must be performed properly for it to work, it either works or it doesn’t. For some people this is easy to do, but I think most people find WILD quite challenging.
If you want to chose a technique which would be most suited for you, I suggest to check: the How To Choose Your Technique-topic.