The way this edition is designed especially with the size and style of the seats, I haven't driven many cars that feel as comfortable. I am in the market for purchasing a new vehicle but after every test drive my 99 TL just feels more comfortable.

I also own an 08 TL Type S which is obviously super nice and in my family have a C-class Mercedes. Neither feels as comfortable

Only car that feels this comfortable when sitting in it is my dad's Volvo V70...

 

The Infiniti i30(which is a rebadged Nissan Maxima)is extremely comfortable

The Lexus ES300 is also good

Also think about the miles of these cars. The less miles the better of the chance the struts are still good. struts play almost the key factor of ride comfort. I know your referring to seats the most but both those cars I mentioned had recent strut replacement so that's why they were the most comfortable to me since you don't feel all the road imperfections. I know your referring to seats but think I always think about ride comfort and factor that in with seats I guess lol