Kohler Highline Two-Piece Toilet vs Kohler Highline Arc Extra-Tall Toilet

Both are Kohler Highline two-piece elongated toilets at 1.28 gpf with a 12-inch rough-in, so the flush and footprint are the same. The K-76301 is the standard Highline: Comfort Height at 16-1/2 inches, concealed trapway, Clean Caps bolt covers and a left-hand trip lever. The 78305-0 Highline Arc is the taller version, an extra-tall bowl aimed at people who want less bending, and it ships with a slow-close seat. Owners of Highline toilets generally report reliable flushes and easy cleaning; the taller bowl is the deciding factor for most buyers.

• Choose the Kohler Highline K-76301 if you want a standard Comfort Height bowl, a concealed trapway for easier cleaning, and the option to pick your own seat.
• Choose the Kohler Highline Arc 78305-0 if you want an extra-tall bowl that is easier on knees and back, and you would rather have the slow-close seat included.