You'll get a lot of answer, but for me, I have Rancho 9000's, and I like very much the fact I can adjust the valving for fully loaded vs. empty. Right now I'm empty running the rear setting at 1, which is the softest. When loaded, I run 8-9-10 just depending on my mood, and it then firms out the up/down floating.
4Wheel Parts usually has the best price, and can install if you're near one. They're pretty easy to do, don't be afraid to tackle it. I did mine, but if I needed them 2 months ago, Ida been up a creek. I threw my back out somethin fierce liftin a 105lb battery the way they always tell you to-- lift with your back and not your knees..... Oh wait, I did that backwards. Explains the OW OW OW immediately following the "pop" I heard.
'15 F450, 30k Superhitch, 48" Supertruss, 19.5's, Torklift Fast Guns
'12 Eagle Cap 1160, 800watts solar, Tristar MPPT, Magnum Hybrid 3k Inverter
'15 Wells Cargo 24' Race Trailer, 600 watts Solar, TriStar MPPT, Xantrex 2kw inverter
'17 Can Am X3 XDS Turbo