I suspect "ride" may be subjective, wing loading, speed, inertia, and rigidity all having cumulative effects.
For my money the L-1011-500 had a very civilised ride, mainly because in addition to the "right" mix of the previously mentioned characteristics, it also had active controls, which "unloaded" some of the jounce forces on the wing. The collateral benefit is that it softened the ride quite noticeably.
There are those who would say it mirrored the difference between US luxury car, and European luxury car, both of which have their afficionados, but who is "right"?