I have them both.
Pros of SS
Doesn't stain, set hot things on it. Looks better, in my opinion, when clean.
Cons:
SS Smudges, lower height, HEAVY, access to storage. Oh, and I have to pay $50 for a cover instead of $25.
Pros of my '10
Much taller, easier on back. Better access to storage bin. Larger work area. MUCH lighter overall, so easier to move around the patio or into the back of a truck.
Cons: Can't set hot stuff on the the thermoplastic, work surface stained blackish around the kettle from ash/coals.
I believe you can get a conversion kit to put on a larger propane tank if you'd like. I don't mind the small ones since I don't have a gasser and I only use it for a couple minutes to light the bottom coals on the chimney, then cut if off.
The '10 slightly edges out the SS for me, however, it's really about what you can find on CL! I paid full price for my '10.