Just recently picked up this 2010 Trek Soho S off of Craigslist. It is in very good condition, all stock, and is a ton of fun to ride. I will be changing from the "ergonomic" grips to a regular round grip of some sort soon, as I never have been crazy about ergo grips.
Since I got this bike, it now seems that whenever I just have an hour or so to ride for exercise I go with the Soho, instead of my road bike (which cost a lot more). I feel a little guilty about this, but the single-speed
provides a good workout and is really a lot of fun to ride.