I tried the double stack, and to quote the old Wendy's commercial, "where's the beef?" I think I could have read the newspaper through one of the patties. If I had a choice, I would still pick McDonald's double cheeseburger.
I tried a double stack yesterday. Thought it tasted like better quality ingredients than the McD's double cheese. I also got Wendy's dollar fries, which I liked much better than McDonald's. Lately McD's fries have been tasting kind of waxy and seem to have an odd aftertaste.