I have had my Broil King Baron for 5 years now.  In the first few months the grill grates rusted badly (they were properly seasoned prior to use). I contacted Broil King and they sent out a set of new grates at no charge.  This is summer #5 (I use my grill year round) I season my grates twice a year and they are rusting again.   I am not disappointed at all since i use my grill year round, I live in Michigan where the temperature varies greatly. The key to the longevity of any grill is to keep it clean, and always make sure the grill is completely cool before covering so moisture does not form. I am going to order the stainless steel replacement grates this time since my grill is getting older. I will post in the future how i like the new grates.