They hold heat really well, and it's said that because it takes so little charcoal to cook, a bag of charcoal will last a long time. But they are also heavy, so take that into consideration.
I know a lot of people swear by them, but I can't see spending that much money on a charcoal cooker.
2011 Dodge Ram 1500 HEMI Quad Cab
2011 Jay Flight 26BH
The green eggs are really efficient. I don't have one but have seen them in use. I personally use a weber smokey mountain (WSM) smoker with wonderful results for less than half the price (as well as weight). Here is a great website for the WSM. We have used ours and fed 2 dozen neighboring campers while doing so.
It will last a very long time, no rust. The temperature is easily maintained and cooks evenly with a great smokey flavor and uses very little charcoal. Ribs do not have to be pre-cooked in the oven or boiled and come out perfect with minimal preparation. We love making brick oven pizza on the indirect heat plate setter. The Large egg weighs 140 pounds, the small one weighs 65 pounds so they are a bit heavy for camping.
Kinda like a zero turn mower for me, will never use a tractor again.
That's the BGE. Never will i ever buy anything else. Not that I will need to, it will last forever. I bake bread, make wood oven pizza, can sear a steak at 800 degrees, cook a brisket at 210 for 20 hours. And I use about 2 bags of natural charcoal a year. And I live 20 miles north of Florida and grill year 'round.