What is the advantage of a stainless tub over a plastic tub in a dishwasher?

One of the big advantages that we have been seeing with stainless tub dishwashers over the plastic tub dishwashers is that the stainless tubs do not warp over time. The plastic tubs are made of such thin plastic that they will slightly warp over time cause leaks that are not fixable. Stainless tub dishwashers never have this problem. Also you get the advantage of being more quite, not staining, and drying the dishes better.