I'm still confused on that one. I want to buy a grill, the Broil King Sovereign XL (or XLS) 90. The difference between the two models is the XL has "Heavy-duty porcelain coated cast iron cooking grids" while the XLS has "[font=Helvetica, Arial, Geneva, SunSans-Regular, sans-serif]Solid 3/8" stainless steel cooking grids". Which is best? I was under the impression that with grills, the absolute best is plain old cast iron. Then stainless steel. Then porcelain coated cast iron. But on Broil King's site I read: [/font] Cast Iron Cooking Grids Experienced chefs will tell you nothing performs better than cast iron for its ability to retain heat and provide superior searing power. Each grid weighs in excess of 7 lbs, giving you maximum searing power. Solid Stainless Steel Cooking Grids Broil King's 3/8" diameter stainless steel cooking grids provide excellent heat retention and trouble free maintenance. So it seems obvious that cast iron is the better, Heavy Duty (vs "Solid"), experienced-chef endorsed choice... or is it? Experienced chefs love cast iron, but do they really love porcelain coated cast iron? Hmmm, this they don't say. Stainless Steel seems to be more expensive, but that probably doesn't mean much. On the other hand, all their high-end grills are sold exclusively with porcelain coated cast iron grids - no choice of stainless steel. But with other brands, the porcelain coated cast iron grids are the low-end choice, while higher-end models come with stainless steel. What's your opinion?