Pretty much any frame from the 1970-80's can be built up as a touring rig. Why pay hundreds of dollars for a chromoly frame you can find at the dumps or thrift store? Surly and Velo Orange don't make anything special. They just took a practical design of the past and marketed it to make a hefty profit.
Wheels and hubs are of more importance than the frame of a touring rig. Get a good old fashioned dumpster chromoly frame and have her aligned by a pro frame builder. Get some wheels and ride.