Disappointed

We purchased this washer to replace a very good but very old one that the timer had failed on.
This washer was a disappointment in many ways: the 'macerator' 'feature' mearly grinds up any food on the dishes and re-deposites them on the dishes. The fill valve has failed twice ( and been replaced under warranty), and the top rack was replaced once for exposed rusty metal; also under warranty.
This washer is fairly loud, and does a mediocre job of getting even lightly soiled dishes clean (even using the recommended detergent