About the Petburger. Work up to it. After you get used to that, regular burgers taste like cardboard with ketchup.
Also the Grande Natural Meats company (website ElkUSA.com) also sells petburger that is a bit leaner and also has a higher percentage of offal in it. They have it in venison, goat, bison, and elk. And even with more offal, you still can't taste anything other than meat.