The Miyata 1000 is still to this day regarded as the best production touring bike ever made ....
there are 2 other bikes that come close (Specialized Expedition and the Trek 720), but many say that the Miyata is still the one to beat
I searched for 4 years to find a Miyata 1000 in my size, and I eventually got one in mint condition off Ebay Germany .... I am well pleased and am spending big money on this bike as I will be using it for touring/wild camping/fishing (including sea drone fishing)
If you can find one in your size, buy it .... you won't be dissapointed
ps: I normally ride a 52cm bike but I needed a 50cm Miyata as the top tube is a bit longer than some other bikes
What about Raleigh Randonneur?
Yes, I made the same conclusion about sizes after reading Miyatas chart. I am looking for a 60 cm frame (with a top tube 58 cm), my vintage road bikes are ~ 61 C-C, with a top tube of 58 cm.
Yes most touring frames have different geometry compared to classic road design. Are touring bikes designed for a more upright position?