#2 was to replace the one my parents had originally installed. It was too convenient not to replace, and #1 had lasted over 5 years. #2 outlasted the original, so I chose to stay with the same maker. The previous models had twist style handles, this one has a lever, and I like it much much better. Easier to use; looks better, and I suspect will last even longer. There was a very minor hiccup in installation, but careful reading of the instructions revealed the solution, and all is good! When this one eventually wears out, I will replace it with yet another InSinkErator unit.