I have both dropped and high seat stay road bikes. On fast downhill road descents, my drop seat stay bike with more exposed seat post definitely dampens road chatter. My high seat stay bike with less exposed seat post tends to be more bumpier. In terms of visuals, I prefer high seat stays. It just looks better to my eye. Plus I feel that stiffness allows me to put down slightly more power on the pedals. My gravel bike has a wishbone style, high seat stay setup with 38c tires and comfort on that is just fine. Wider tires can even out the comfort level level between the two designs.
If I were to buy another road frame, I would probably get something that looks like a Cervelo R5.