I dunno about their stainless steel, but I have 2 of the 9-tray plastic, and a 4-tray, and they work great and have from the time I got them. My first excalibur was a used model that someone gave my BIL, and he passed on to me, looked from about mid-90s, and I worked it hard for 5 years before it broke.
my two 9-trays I do not use often, but when I do, I use them HARD, running for up to 10 days at a time.