That may just be hype about the Westinghouse being more accurate but I doubt that the HB roasters are better insulated, they look exactly like Westinghouse but are made from thinner metal - how else can they sell for 39.95 at Big Lots. We have a Nesco roaster (6 quart) and it gets just as hot on the outside as on the inside.
All of the Italian families in our neighborhood had a Westinghouse roaster, often used for rigatoni and chicken when they had large family get-togethers. A Polish Catholic church also has as collection of roasters, for their sausage and Hunuska? They seemed to be popular with some ethnic groups and not others, we Irish just have Irish roasters you place in the oven. So did you donate the roaster to your church or volunteer fire company yet?