fox shocks are really overkill unless you're doing coil-overs, high-speed or intense off-roading to where shockfade would be a hindrance to your performance. The remote resevior is specifically to add additional fluid and nitrogen to reduce the amount of heat made therefor lessening shock fade. the fox shocks run about $190 a shock, the bolt in ones for the jeep.
the bilstein 5150's are the same way.
if you want a great ride for a reasonable price you should be looking into the Rubicon Express mono-tube shocks, or Old Man Emu. a set of 4 can be picked up for about $200-250. They're built on the same principle of the Fox shocks, a high-PSI nitrogen charged monotube shock, except they cant be rebuilt and have no expansion ports for the rezzies.
but if you want fox, by all means be my guest! id love to have fox shocks with resiviors all the way around, but unfortunately i dont have $800 to drop on shocks, they are rebuildable though.