Some here took this post too literally and out of context. Of course these are trucks and don't ride like cars, but who was comparing them to cars?
As an only drive, I don't want a bone jarring truck as my daily ride. My '06 4 door Dodge dually rode really well, which I can attribute to the long wheel base. I had a reg cab 2010 Ram deisel that I hated for its bad ride.
Too get back to the original post, It seems from the above that all three have acceptable rides and only Dodge Rams made the coil spring mod. Thanks.