My cars spend a good amount of time outdoors and as such require constant washing. I'm starting to notice a lot of swirl marks when in direct sunlight. I'm always careful to make sure my bucket and wash cloths are clean and have always used microfiber towels to finish. I've even purchased a gas powered leaf blower to dry instead of using a chamois and towels Even after taking care with these steps it's time to consider some paint correction(possible sanding) to restore their finishes. I am also considering having them ceramic coated afterward but have heard conflicting info on the process. Anyone gone this route before? If so was it worth it?