Burley has released a couple of commuting specific bikes that look pretty slick.

http://www.burley.com/products/commu...s/default.aspx

One uses tiagra / 105 components, and the other uses the SRAM internal hub gearing, which would be very nice in the wet.

I'm very, very happy w/ my Trek 520, but I like the disc brakes on the new Burleys. No worries about wearing through your sidewalls when the rain throws road grit onto your wheels.