Originally Posted by brandonjansen
There's pros and cons to both. The Bilsteins provide better adjustability which is definitely nice to have if you decide to add a lift down the road and want to level it out or simply want to change your height. The con is that they require the stock strut to be disassembled and then reassembled on the Bilsteins which requires a spring compressor. The Rancho's are the opposite. They don't provide any height adjustability so you're stuck with the height they're at however the come as a complete assembly that can just be throw on the truck. Easier for the average truck owner.
Personally I think the Bilsteins are also a better shock than the Ranchos and will give you a better ride. So overall I'd recommend the Bilsteins as well.
My bad! I forgot that's how it works on 4th gens! It totally skipped my mind that the shock is in the strut, I'm too used to dealing with torsion bars......