For Terminal B: CLEAR is unecessary to have at MCO unless you fly out Sunday afternoons with all the tourons.

I fly out every week in the mornigns and never have more than a 5 minute wait at regular TSA lines. MCO does have a few crunch times in the afternoons (say 330pm to 530pm) where the lines are bad. Virgin has TWO 747s loading up at those times going to London - the flight times are pretty close to each other. Just the folks for those 2 planes alone can ruin the TSA lines, not to mention the typical Delta flights heading to ATL.