Somehow I missed this reply but I'm thinking Lowes has their model mixed up in that particular add, the Genesis S-320 is indeed all stainless with stainless cooking grates and flavorizer bars ...
Click here for the Genesis S-320 specs, this is the grill that we have and are extremely pleased with it. They have the price and pictured grill right, they have the specs wrong, we paid $850 for our S-320.
I'm betting the description Lowes is advertising is for the Genesis E-320 ...
Click here for the Genesis E-320 specs, I'm thinking that particular grill went for $699 at Home Depot, but as usual I could be wrong.
I'm a very firm believer in the Weber grills and I'm hearing and reading their Smokey Mountain Cooker is one badazz smoking machine that a lot of folks who know their way around a smoker highly recommend.
Click here for the GSM specs ... if your at all into smoking.