Hey Pete - We've used Large Spicewines forever, and cook the type of numbers you're talking about. EZ to dial in with a charcoal maze, and hold temp rock solid. We've even been know to cook on the road with them (wink,wink). Lemme know if I can help. I still need to get back to you on the other one. Thanks.
Rancho To Go BBQ Catering
Spicewine BBQs - West (Left) Coast
Large Spicewine - Ol' Blue
Twitter - @ranchoagogo @ranchotogobbq