If you research shock technology, and the companys that make shocks, and their opinions, you find that Rancho shocks are garbage along with most of the "cheap" shocks.
A 7100 or a 9100 Bilstein is a great shock for the price. The valving is kinds off though, but it works okay for the price. You can get them custom valved, but you need ot know what you need.
I am going to get 9100 Bilsteins for my 1st gen here soon. I wanted to get some that are easier to adjust the valving(hence LOTS more $$), but I dont plan on spending that much time in the truck at 5. 12 per gallon #@$%!
And for the record, my 1st gen has had 3 different sets of Ranchos.