Don't overlook the vintage lugged steel stuff. One of these should fit the bill nicely:-
View attachment 501923
Don't be fooled by the stripped-down appearance, a Raleigh Royal
is a proper Touring bike and it's price when new in 1985 would be the equivalent of £1,000 in today's money, so a pretty high quality machine. I took the mudguards and rack off as I don't actually use it for touring, but it's comfortable enough to ride all day long. In fact, it's the best-riding bike I own, even running on factory-spec relatively narrow 27" x 1 1/8" Michelin Club Tour tyres. The frame is mostly Reynolds 531 DB, and in the condition pictured it weighs less than 26lbs, which is light for a long-wheelbase 23 1/2" size lugged steel bike.
I bought it secondhand last year and it owes me the princely sum of £33 so far, which was an absolute steal as Royals can fetch pretty strong money used, just like Dawes Galaxies often do.