I had Fleetwoods with SS springs, 9c1 springs, and Sprint springs. The best ride/handling I found was with SS springs in the front/9c1 springs in the rear and Hotckiss sway bars.
My current '94 has Sprint springs but it sits too low. I am going back to SS fronts and 9c1 rears.
When I had SS springs all around, the rear would sag when there were rear passe