Had the 500 series which corroded after only 8 years. While it was still working, decided to upgrade to 800 top line. It's as good. Everything is very good. Only gave it 4 stars since the remaining time display is at the top instead of at the front, rendering it useless, forcing you to look at the app for progress. Second reason is the utensil cage is half as big as it was on the 500 series. Yes the top 3rd drawer is very useful, but the utensil cage is needed more.