Toyota Avalon
GMC trucks from 2015 and on have great seats and are quiet. I prefer mine over ANY car. Nice ride if you keep 30 psi in tires when you don’t have a load.
Mercedes S 550
or
Lexus LS 460
or
Toyota Avalon
We had an Avalon for 10 years. We named it Das Boat. They float.
I have a ‘12 Toyota Avalon. Very comfortable inside and has a decent V-6. The back seat is extremely roomy and the back seats recline. One of my friends told me that the interior is way more comfortable than his father in law’s Caddy.