I am replacing a dishwasher and am looking at the Bosch 300 series and the 500 series. Anyone have any input on whether the 500 is worth the extra dollars? It has an additional drawer at the top for spatulas and the like and is rated slightly quieter (2db). I have had good luck in a vacation house with a Bosch so I am settled on that. The Kenmore that was in developed a small crack in the tub and is useless.