has anyone ran these springs? http://www.ironrockoffroad.com/Merch...egory_Code=PFX i like the fact that the pack contains 7 leafs springs which from what i understand is better for the go fast stuff in the sand. anyone have any experience with these leafs?

maybe i should be a little more specific of my intentions. im looking for around 5.5 inches of lift. i was thinking 3.5 leaf packs, longer boomerang shackle, and shackle relocation bracket. i know most of you like the re and ome leafs. what do you think would be best for me? most of my offroading will be in the dunes, mud, and some trails. most likely no rocks or anything because i dont have much of that around me. it will also be my daily driver if that changes anything. thanks