I'm another cheerleader for the Compass/Rene Herse tires (Chinook Pass and Stampede Pass - both standard and extra light). Switching from Gatorskins to these was a revelation. They are soooo smooth and inspire confidence in the corners. I have Panaracer Gravelkings on another bike. They are not bad and a lot cheaper but nowhere near the ride quality of Rene Herse. Another good tire is the Soma Supple Vitesse, which appears to be an exact copy of the Rene Herse, albeit with a slightly different tread pattern. Note that all the tires I've named are made by Panaracer.