I really struggled with the CW as I was constantly (I mean weekly) found myself claying the car to remove the raildust that accumulated on the lower panels and bumper.
I chose to go the opticoat gloss coat route and it really helped with the maintenance as the raildust has been reduced greatly. I did the gloss coat myself and was actually fairly easy. It took a whole day to polish and everything but has been holding up great since early summer.
I used Sonax net shield as a 'topper' which may have helped but can't be for sure. More recently, I tried Chemical Guys white light radiant finish for giggles and believe it further helped to bring out the CW color. I also got their innerclean and V7 spay for giggles. I'm a big fan of their stuff as it's priced relatively well and they ship fast as they're on the east coast too.