I have the Skyjacker Nitro shocks, duals on front, singles on rear axle. They came with my 2 1/2" lift kit. At first, they sent me the wrong lower mounting bracket for the second (outside of the coil spring) shock, so I could only mount one shock on each side of the front axle. They were a bit rougher than the OEM shocks, but when I got the proper brackets and was able to mount both shocks on each front side, the ride is now quite a bit smoother than stock.
At some point I want Bilstein shocks all around though.
Tom