Diggity said:
It's typically the fastest option but I travel with folks that don't use Clear, and they get through security first on occasion.
My main point is that it's typically a couple minutes faster, which wouldn't justify the cost in my opinion.
However, once in a blue moon, the pre-check lines are crazy long, and Clear potentially helped me avoid missing a flight (or at least being quite rushed). Those rare instances make it worth the money to me.
This is spot on to my experiences. Nice to have especially with work paying for it. I walked in with coworker running a little late to GSP one morning trying to get home to IAH and prob a 99% chance we would have missed our flight without Clear as the TSA Pre line was like nothing you have ever seen. That morning bank of flights from there is big.