None of my grates are SS. In my big RF, I've been using them for 6 years without issue. After each use, I burn the residual fat, spices, drippings off with my weed burner, wire brush it, then spray with cooking spray. I'm not saying I wouldn't use SS, but the materials to build my cooking grates haven't cost me anything.
Team: [B]Smitty's Real Pit BBQ[/B]
[B]Superior SS-3[/B] - Courtesy of Gainesville Jaycees and Superior Smokers
Custom Built Reverse Flow Stickburner
[B]Weber[/B] 22.5" WSM
[B]Weber[/B] 26.75" OTG
[B]Weber[/B] Blue 2000 Stainless Performer
[B]Weber[/B] Red 1998 Stainless Performer