I need to replace the H burner on my CharmGlow grill. The replacement options are Stainless Steel or Cast Iron. The price of the two is only a few dollars different. Any opinions on which will last longer and/or cook better? I've used stainless in the past and that seems to last about three seasons (the OEM aluminized steel is a one year deal). No experience with the cast iron but it seems like with an H burner configuration with ceramic "brickets" on grate above the cast iron might help spread out the heat more evenly.