I have the Rancho Quick Lift coils newly installed in my 02 4Runner. I can't say yet whether I like them or not. Set around 5, they are soft and bouncy. Set at 7 they are kind of stiff.
Seems like they would be good for rock crawling, at slow speeds they work great if not a little soft. At higher speeds I don't care for them much. There's a little more body roll than I expected.
I don't know for sure yet if it is because the springs are still settling, or if it's because I haven't done the rear yet. I would use the 9000s in the rear if I could find a part number for them with a lift. I am looking at getting some OME 906s for the rear. They are a 2" rear coil and the fronts are 1.75". My front is 2.5" taller than before I took out the old ones, so I don't know how much sag I had before and how much lift I actually got over stock. I hope they settle soon or I may just do the diff drop to be safe.
kp