For a given wheelbase, all bikes of a given type (track, road, touring, etc.) ride with the same level of perceived comfort, unless the rider is prone to confirmation bias.
For a guy your size and weight, carbon or aluminum with large-section tubes would be the best choice. Weight of a tube increases as the square of the diameter; stiffness increases as the cube of the diameter.
Here's a myth-busting report of fatigue tests of high-end carbon, aluminum, steel, and titanium frames from 1997.
(TL;DR: Several carbon and aluminum frames passed the tests. All of the steel and titanium frames failed.)
https://www.sheldonbrown.com/rinard/...tigue_test.htm