There are several types of cooks who prefer different type things. If you like a challenge and being in control of the fire, the taste, the end product definitely get the egg.
It uses lump charcoal and that is an entirely different beast than your typical briquet charcoal.
It takes temperature management, time management and food management.
Your average griller uses gas and it tastes like they used gas. when you master the kamado style grill/smoker, nothing comes close.
Get the egg if you are willing to invest in learning how to cook everything on it and I mean everything from pies to turkey, to pizza to fajitas.
When you go to someone's house and see them cooking on an egg vs gasser, you know you are in for a treat.