What are you going to cook would be my first question? Then your choice can be debated easier.
If you're doing pigs only, that's one thing or vending the same or similar products, that's another. The 110gallon and 85gallon units I make are also used for vending and-or maintaining a precooked product, as in turkey legs,wings,ribs etc. It's one of best choices for those items. All hogs, buy a hog cooker. Big doors make big heat loss when vending.Tailor your plans to your cooker and you will be happier. Steve.