I just put new shocks on my 89.. I went with the Monroe Reflex shocks. They are $50 a pop at Checkers Auto..
I went camping last month..and going down the 6% grades at 65/70mph the bronco just wanted to go straight around turns. And I was weighted down with all my camp gear.
Well I just got back last night from a week of camping. I am VERY happy with my reflex shocks. On the back dirt roads doing 35-40mph I did some swerving and the truck handled very well. A little slide but that was because of the loose dirt road. Comming down the 6% grades in the Rocky Mountains, I was able to do 70 around some turns that the last shocks I had just let the truck go straight.
I noticed the shocks have a play point in them. They allow body roll to a slight point, then lock in and keep the truck stable. This allows for a compfortable ride as the shocks can work over bumps an what not, which provides for me, a great smooth ride. And with a lifetime warranty (as long as you own the vehicle), I will replace em in two years with the same set.
I would suggest doing this if money is an issue.. replace the back two shocks, then two shocks upfront. Next month when money allows, buy the last two shocks. This way you can get a good ride in the mean time, then finish up in a month. If you keep the truck for another 6-20 years then just keep your recipt.. they don't track how many miles you traveled so just say the shocks are worn early and a new set is given to you over the counter!