I am looking to place an order with the detailfest sale going on. One of the items I would like to purchase is a leather condtioner. MY family has 5 cars with leather interiors and havent been cleaned or condtioned in a little over a year. I have narrowed it down to either pinnacle or wolfgang leather conditioner due to the bulk size of 128oz. Any one have experience with these and which is better? Thanks for your input!