We had two pizza cutters that were both over 5 years old, that this replaced. We typically eat at least 1 pizza a week in our household, so it gets a fair amount of use. The one cutter we had was about an inch smaller diameter wheel and required a lot more effort to cut through pizza (this is about 4"). The other had some special coating on it that had worn off over the years and parts around the center bolt had begin to show rust (yuck!). They had both had obviously become dull over the years slowly, and I guess you just become accustom to having to make 4+ rolls over a line to get a complete through cut. Immediately was blown away when I started using this, as it was cut through in a single pass! Sometimes I have to make a double pass, it depends what kind of crust and how it was cooked. Additionally, besides the need for multiple passes, it requires much less downward pressure to achieve the perfect cut. I will probably replace my pizza cutters every few years now, and will reconsider this one next time.