For me, Finish Line Wax Ceramic lube. Goes on white, dries clear and tends to keep my drivetrain surprisingly clean. Only downside is that it needs frequent application, I probably add more every 150 miles or so and wipe the excess off. Also, I find gasoline to be the best chain cleaner of all, including the stuff sold at bike shops for $20 a can. A couple ounces of gas in a Tupperware makes quick work of filthy chains. I then use the leftover gas to help get a backyard campfire going…. Multipurpose.