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I use Megs NXT Generation Tech Wax 2.0, but found that you really have to use a da with it and use tiny amounts or it leaves a greasy finish. All of the other recommendations are excellent as well.
I have been using Griot's Garage 3-in-1 ceramic wax after reading and watching many reviews on YouTube. I'd like to say that it's quite easy to apply and the results has been great!
If you have the time to dedicate 3 hours. Use Mothers Complete Ultimate Wax system. Starting off with a wash and clay bar. Mothers by far is the best over the counter wax for Black Vehicles. Every other products I've tried, mostly the synthetic stuff, leaves oily residue / streaking.
If you don't have 3 hours, just the Step 3 will do. (Pure Carnuba Wax)