if ya dont mind me asking, what trailer
detailing trailer?
if you plan to tow, then i like the kyb monomax. the gas ajusts are also good for towing, how often you plan to? if you tow once in a while then the gas just, but if its more frequent then the monomax. the monos are a bit stiffer than the gas, so thats somethin to factor in. all depends on prefrence, most of this is all subjective to opinion
when the X was a tow rig/DD it had monomax front air shock rear. thenwhen towing was less frequent, it had the gas ajusts out front. bilstiens are also a good option but $$$. another option is air shocks in the fornt like blown used, but thats only if you want height ajustent up front, but for your application it probbaly would be more effort etc, and anyways conventional shocks ride a tad better imo. sorry this got all wordy.!
have you looked into air shocks also for your rear? i had those and would pump it up and down as needed, pump up alot for hauling/towing, let it down for DD to retain ride height. imo (and this is all subjective) the load adjusts can be a little harsh unloaded, but then again when i test drove one it had <1/4 tank too so it weighed little in the rear, kind of felt like driving light rwd pickup