Just to muddy the water a little bit............
I have the downey HDs with Rancho 9000x or whatever that last digit is, the newer ones. I have the 9000's set to softest. My ride is ok, but I think I would have done better with monroe. I would definitely recommend the HDs however. Its nice when you're loaded carrying heavy stuff.
IMHO: "Its also a truck and should be stiff, like my 71 FJ, kinda like ridin on a log!"