Hi Mark,
Yes, the only difference between the S and EP is the SS cabinets and shroud. Everything else is the same.
I quickly called Weber for a few reasons, andseeing your post, I asked about the EP line, I was told they are still making the EP series and you can get it through certain dealers or on line. I was told they don't show it on thier website because it's the same as the S series but with the enamal paint. I don't understand why they wouldn't show it. ???? I was in a rush and did't pursue it. But yes, they are still being made.
I also noticed that when you look at the E series on the web site, it show's it's available in green, copper too. I had thought that these colors where only availbale on the EP line, not the E. But checking on line, it looks like I am wrong on that because I see from Amazon I can get a green E 330 and it has the PC grates.
So I'm confused too. (But that's nothing surprising) What I do know is I have a brick red EP 330. It has the SS burners, grate and bars, and the sear station and unlike other EP 330's I see online, mine says "Special Edition Genesis" vs "Genesis" but the specs are exactly the same. Go figure.
Anyhow, I love my EP 330. Yes. Love it. I never use the side burner, but like you wanted the sear station and I prefer the enamal rather than the SS on the outside. I never had good luck with PC grates and wanted the SS grates and flavorizor bar and I am very happy with them. The searing burner works great and the grill is top notch. If you want high heat cooking, get it!
I would try ACE harware, or an apliance store (Weber has a dealer locator feature on thier website), or just order it online. I was able to find mine last year for $799, with no tax and free shipping.