We are on our third, which might sound bad, but use it on average 3-4 times a day for 5-6 years before we have to replace.  Call it 1,500 uses between failures.  It heats up fast, allows us to select the temp, and is easy to clean.   The big lesson is MAKE SURE drips don't end up in the buttons or the element!!  Also, they tend to fade out, but we can usually get another year of use by rotating the kettle on the round base 180 degrees.