My personal preference is a Ranch RS9000XL. I don't know how much you're willing to spend. I always ran Rancho 9000s on my 85 truck and was pretty happy. When I first switched over to my 90 SAS 4Runner I used the Bilstein 5125s that Marlin sells and quickly replaced them. They my suspension bottomed out constantly when rock crawling in Moab and I did also notice that they were not good at controlling my suspension when I was loaded up for camping. I went to the Rancho RS9000XL and have been much happier (I run them maxed out all the time). I will say that on the street the Bilstein shocks rode really nice and I was happy with them when I wasn't rock crawling or loaded down.
Personally, I would choose Rancho over Skyjacker though I have never run a Skyjacker shock. If you want the gas charged design take a look at the Bilsteins as I would anticipate them being a better product and maybe not that much more expensive.
