which is better? i'm considering purchasing one of these items either the 303 aerospace protectant or einszett cockpit classic or cockpit premium. i know 303 can be used everywhere around the car even as a tire dressing. the einszett cockpit classic/premium leaves a nice scent from what i hear from autopia and cleans at the sametime, but can it be used as a tire dressing? theyre both overall good products, just not sure which to get