This time last year I gave my wifes black 307 a full correction detail with excellent results.
12 months on and despite very carefull washing techniques it has a few swirls and marks that show up in direct sunlight. It needs claying again to remove the tar and crap from the bottom half, but what product would you recommend for a mild paint correction? I had thought of using SRP applied with a DA just because I have some, but is there anything better?