American Range AF45 Deep Fryer

I started a new restaurant with 4 new American Range Fryers (2 AF45 and 2 AF75). In less than a year, two had the frypots replaced under warranty, and one had the frypot replaced twice! After the first year, the repair parts cost $500 with another $150 in labor cost to install. I did this a couple times, but then decided that it would be more prudent to purchase a different brand fryer that, with proper maintenance, would hold up. My previous restaurant had 12 year old Frymaster fryers. I managed this restaurant from the time it was 2 years old until it was 12 years old and never changed out a frypot. 18 months after the one year frypot warranty has run out, all but one of the frypots leak and now that I have a thermostat problem with one fryer, I will be replacing it with another brand.