Eh, most aftermarket seats are geared to keeping you in the seat during from lateral momentum. Less comfort than OEM.

OEM GT sedan seats are probably your best bet. Big Lexus, Mercedes, etc. sedans.

I've seen bus- and truck drivers sit down and watched their seat just sink down a few inches, thinking that those must be so comfortable and absorb so much of the stuff that the passengers who sit on a bit of cloth stretched over vandalism-proof plastic chairs have to endure.

I've often thought about how superior my car seat is to any office chair. Do you still sit with your legs out in front of you, and lower your desk?