I keep my car SUPER CLEAN so after 4 years I finally decided to try the 'fancy' leather cleaner and conditioner. I've only used the Aerospace 303 protector in the past, typically for RVs and boats, but read a car review that highly recommended it. I still use it on all other non-cloth interior surfaces, rubber seals, steering wheel etc. I think I would be more impressed with the cleaning aspect if my seats were dirtier. You may need to try on a friend's car who has pets, kids, or is just plain sloppy.