I bought my grill before it became the Broil King Keg and it has been great for many years of varied use. I've slow smoked full pork legs for 28-29 hours, seared steaks at over 900F and everything in between. This 'Q' can do it all. Temperature control is straight forward after a couple of runs to get the hang of it and it will go a long time without the need to add charcoal (I didn't add any after a large load to start before cooking over 24 hours, didn't need to open the Keg to add more). 
The insulation in the body is incredible, it is extremely efficient and doesn't lose much heat through the body at all. 
I've taken it to the cottage & grilled with it on the bow of a patio boat at a water access only beach. Dropped it on the hitch mount to cook up incredible camping meals. Even walked it down the road to join another Broil King grill in cooking up a storm. The portability and versatility is unmatched!
If you're on the fence, jump on over, this thing is amazing!