I prefer 303 of the 2. Can be used for practically anything from vinyl to fiberglass to plastic to rubber. I use it only on the plastics, slide and door seals and tires. Sidewalls get different types of Meguiars.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)