I have that Genesis S320 as well (natural gas model), and it is fantastic. Yes, it is all stainless--cooking grates, flavorizer bars, exterior. I think I bought mine for like $650 a year ago, but it seems that the price has actually gone up quite a bit on this model. It's great though. If you want to save a few bucks, I think the Weber EP models (not the E models) also have stainless steel grates and flavorizer bars, but are not the all-stainless exterior.