If you're near an REI, you might see if they have a Coop 1.1 in your size. That's a re-brand of the old Novara Randonee. It's got disc brakes instead of rim brakes and wider tires than the one I rode across the country, and is roughly the equivalent of the Surly Long Haul Trucker (now sparsely available as the Disk Trucker, and a bit stouter (IMHO) than the Trek 520.
Unfortunately, you just missed REI's big sale.
