Haven't had one in years, but was introduced to them in the late 60's! Actually....when I was in the USAF, I was on flight status and most crewmembers brought them back directly from Japan. Absolutely great cookers.... from incredible burgers on up and easy to control. I'll have again now that I'm getting back into Q'ing and learning more about smoking!
Taken care of, they'll last a long time....even in the elements!