I had an older Frigidaire 18" dishwasher for many years and only updated it because we were doing the kitchen floor over.  I was excited to get control and features not previously available in my older one's era. A big plus with the upper rack spray nozzle, stainless interior,  and an electronics panel with a lot of bells and whistles including my favorite: delay start.
I would recommend to anyone in need of an 18" model.