I'm kind of partial to the sport tourers myself, the road/cyclocross geometry often has short head tubes which I wouldn't like for a 2 hour ride. Maybe something like the ***** Inc. , Salsa Cassaroll or Vaya, Volpe, etc. Especially in urban/suburban environments I like to be a bit more upright to be better able to see what the cars are up to. I think the previously mentioned pacer might be a good choice too, but I don't think it has rack braze ons if that's an issue.

I tried commuting on a Cross Check last year, but it justs didn't work out for me seating position wise (among other things like fit issues - the Cross Check is a great bike, just my body and it never really came to an agreement). Since you're already riding a road bike, that may not be an issue for you, but it's another style of bike to consider.