I clean the top with 303, the window with Plexus. A lot of people use Raggtopp to waterproof the top, I like Renovo's waterproofer. It's a pain to find, but it paints on, which I find much more satisfying and trust more than a spray. I haven't tried it but they also have a product that claims to renew faded softtops.
Convertible top care by Renovo International - convertible top care specialists UK