looking for small quality travel trailer to use at disasters

For your usage a 5th wheel won't be much different than a camper unless you want to offload the hitch to free up bed space. There are some newer hitches that are light weight and easy to remove but a TT may just be easier. With a 3500 truck you can tow just about any TT you want so it really depends on how much or little you can live with/in. Arctic Fox makes some really high quality units. I'd probably start there. Quality and RVs aren't always spoken in the same breath so be prepared to look around a bit. Smaller units are especially tough to find quality in since often times small RV shoppers are on a tight budget.