Topping our picks is the American Standard 2548A100.020 Studio S, a feature-packed model we recommend as a stylish upgrade from an existing standard toilet.

The American Standard Champion 4 2002.014, $300, topped Consumer Reports tests of single-flush toilets.

We've tested and reviewed products since 1936. Read CR's review of the American Standard Mainstream 753AA101.020 toilet to find out if it's worth it.