I agree that a lot depend on how much you intend to cook at a time. I love my WSM but only cook for family and small parties. If you want to cook more at a time, then the UDS has more capacity. Both are pretty consistent with being able to walk away and not closely monitor
Weber One-Touch Gold
"Go on! Shoot me again! I enjoy it! I love the smell of burnt feathers and gunpowder and cordite!"
-- Daffy Duck