I've not yet tried either of these, but based on what I've read here and in several other threads, I think most people use only Reno. There is the "mac" method, which is someone who has come up with a popular care regime for shell in the shoe care thread. IIRC, he uses some polish, but only once in a while and very sparingly. One other option is Venetian Shoe Cream. This is supposedly recommended by Nick Horween for shell. But again, I've seen comments from people here saying they prefer the Reno. Sorry I can't direct to links (maybe I'll make a project for later): but check the shoe care thread, this thread, the C&J thread, and probably the C&J for Ralph Lauren thread, or search for these products, and you'll see. In sum, my SUBJECTIVE opinion based on what I've read here: 1. Reno - most people swear by this 2. Venetian Shoe Cream - recommended by Horween; some people say it's overrated and prefer Reno 3. shell cream (any brand, not just Saphir) - very few recommendations. I think Mac uses sparingly, but he has a "method" If it were me, I'd play it safe and start only with Reno, and then only applied rarely.