I'm currently using Pedders (Aussie brand), shocks and springs at standard height. Both are stiffer than factory, and I do not get any noticeable sag in the rear. It just rides horrendously over bumps, but that may be due to the older KM2 Goodrich Mud Tyres, which have incredibly stiff sidewalls, and while mine have tonnes of tread left, they were manufactured back in 2012, so the rubber will be getting harder with age. I've had 2 back surgeries, and drive on country rodes, so would love something more complaint.