If you want a smooth ride I know the truck for you. A volvo 770. Them things ride like a dream. Of course the freightliner columbia has a very smooth ride as well. I ran a freightliner century class straight truck for awhile and it rode good to. It's the same basic thing as a columbia. The volvo and the columbia I ran as tractor trailers. Which to me a straight truck rides smoother than a tt anyway. A long-nose Pete 379 sure does look good sittin but it don't ride worth a darn, and it doesn't have much room either, but it sure does look good. Another class 8 i heard rides good and i know has plenty of room is kenworth's T-2000. I know it's ugly as sin, but it has plenty of room and I think it comes from the factory with all the way up to an 84 inch sleeper. Plus that t-2000 is light weight. I hope my rambling has given a lil information.