The Doe Joe is an awesome product and literally does transforms your Kamado into a legit, if not better than traditional pizza oven.  My very first pizza came out close to restaurant quality (better than many though).  The second pizza once I nailed 550 as a good temperature point (for me anyway) was spot on legit fire oven pizza, the crust was spot on and not charred black anywhere.  Well worth the investment and a quality build as you would expect!