I got the SOR 1.5" to 2" lift springs[at least that's what I asked for/the shop told me they] installed in Oct 2004. Why the SOR and not ARB/OME? At the time the shop had had positive experience with the SOR's and I didn't know anything about the OME's. I was disappointed at first 'cause the SOR's drooped on the driver's side and I found out that the OME's come with separate springs for each side of vehicle(supposedly to prevent driver's side lean) and cost maybe slightly more. Since then I had someone switch the rear springs left to right, in order to see if my SOR's were defective and, no, the lean remained. However, to their credit, the SOR springs have not sagged much in almost 1.5 years, and returned the vehicle to maybe stock height plus 1" or so. Then I read reports here about OME springs w/ body lean, and other brands that sag severly and warp after six months, and I become pleased with what I have.