I've listened to all of this and decided since most of you are on the BGE bandwagon that it would be shrewd to go a different direction.
Just bought a Traeger Timberline, and I'll tell you what, the thing is amazing. I'll take it 100 times out of a 100 over the egg. Smoked some pork butts the other day. It was 20 degrees outside most of the time, and it had no problem maintaining the temp. I also decided to do a rack of ribs and threw a pan of chex mix on there at one time. If I'm going to drop that kind of money on a grill/smoker it better be have some capacity to do a lot of meat.
100 time out of 100... so you want your steaks cooked at 325 degrees? The Egg is a beast an 20 degrees aint nothing. I grill way more in the winter than I do in the summer. Have cooked on the Egg in negative temps with no problem. I bought the BBQ guru and it will hold temps really steady maybe a 3-4 degree swing at the most. I will guarantee the Eggs I have will out last the Traeger 10 times over. hahaha of course I am just arguing for argument sake and I would probably buy a Traeger if someone held a gun to my head.