Hey 3speed, hope the storms missed you tonight- yikes it was scary for a bit.
In new bikes the '11 Salsa Casserole is, IMHO, just about perfect. The geometry is spot on for a sport touring bike.
Vintage - the trek 520 is not a bad choice, but you need to look carefully at the model years as the geometry - specifically the chain stay length - varied quite a bit, full on touring in some years. Also take a look at the catalogs, some of the other models have the same geometry as the 520 with different tubing and components. I think in '86 the 520 shared the same geometry as 4 other bikes, 400' 400t..... More cost effective than a 520 for sure.
Others that may work -
Bridgestone rb- t
Early 80s specialized sequoia
Bianchi rando
Raleigh Carlton - this is a hunch looks sport touring
Motobecane gran touring/jubilee
There is a good post on this already - I will try to find the link....
Hope this helps