The plastic cutting board is over 15 yeears old and that encompasses that item being subjected to both Kenmore Elites form 2006 and 2015. I"m not going to replace because of stains from all those years ago. As for the 3rd rack, those 3 corning ware items are used too cook Malto Meal in the microwave without any nonstick spray or butter or oil. And those 3 sat for 3-5 days before the load was run. Clean results in the 3rd rack for those alone impressed me and could't not have been accomplished with either Kenmore Elites The Bosch is my 1s 3 rack dishwasher. With the poor cleaning results of dual level mugs on cup racks with the Kenmore Elites,(I had better results with cup shelf stacked mugs with the Potscrubber 1200) I was a jaded skeptic. But the Bosch has blown me away. Same with the Crock Pot slow cooker ceramic liner. Tje Bosch has better results than either Kenmore Elite. Had a similar crock pot that did just fine in the Potscrubber, the only frustration was trying to find a place to put it in the bottom of the GE. All my dishes used in this load were bought by my mom Spring of 1962 after moving into the new house September 1961. These dishes have been in my posession since fall 1974 with my 1st college apartment. They may be beat up and even the ceramic glaze is wearing off, but they fit very well in the Bosch. The best thing about the 2 Kenmore Elites was the bottom rack but the cleaning still dind't hold a candle to the Potscrubber in the long run. I was happy when the control board failed May 2021 in the Kenmore Elite and I could get a Bosch.