After everything is powerwashed I go over all of the plastic with Endust. This is not truly a wax but more of a cleaner and polisher. It is relatively inexpensive and does the best job of leaving all of the plastic looking like new while not acting like a dust magnet as does using ArmourAll and allows dirt and mud to come off easily. Pledge, which is a wax, makes it look great but attracts dust immediately. Tire Dressing probably works the best making the plastic (especially the black) look like new but is relatively expensive. I only do this when BR is going to be in pictures.
I suppose mentioning that using a new package of old fashioned cotton baby diapers as the polishing rags might be considered to be going over the top

!!!However, compared to my ritual in cleaning and detailing my Harleys, I feel guilty in the reduced effort I put into my BR...