I sold my '05 R1200GS last mayish, and been bikeless since.
Super Ten was on the top of my shortlist, but they're too new to get much of a discount on the used market.
So I bought an '08 R1200GS Adv, and I'm very glad I did. I didn't think I would care about the extra wind protection, but it's very nice, and the big gas tank is a really great perk. The ESA isn't half bad either. The S10 is nice, but I'm glad I didn't go with it.