I don't own one but several friends have these type ceramic Kamado grills and every single one LOVES them. I've seen them in action and tasted the food and it's delicious.
The guy who did the most research ended up buying the XL size Primo brand oval ceramic grill as it was the most versatile (grill size, different temperatures on different cooking areas at the same time, etc.)
The more you do any one thing (shoot, drive, ride, fly, camp, hunt, fish, etc.) the more buying the best makes the most sense, which is why I've got three Smith 41 .22 target pistols and no Hi-Standards or Smith 422s.
Similarly, If I grilled more often, I'd have one of these ceramic Kamado grills in a heartbeat. I haven't seen anything better for the purpose.