Your question holds part of it "Top 700c touring" or more specifically "Top Touring" which is what Continental used to call their touring tires.
Expensive to buy, but less $ / mile. When I used them from Portland OR to SF I never even craked my pump in the 2 1/2 weeks, and continued to use them for another couple thousand miles of commuting.
Now they are called the Touring Plus (the plus is a reflective sizewall stripe).
I like pdlamb have tried the paselas, but found then to not last nearly as long, and to come apart. - cheaper to buy, more $ / mile.
I hear good things about the Schwalbe Marathons, but have never tried them.
Staehpj1 mentioned gatorskins - I use those on my road bike to protect against the goat head thorns here in Arizona and love them, but haven't tried them for extended or loaded usage.
When I do the TransAm next summer I intend to use Conti's