Chains are designed for heavy duty loads and are able to take more abuse off road. Chains can be more difficult to install if you are already in the ditch. There are 2 common type of cam latches on chains. A cam over with a sliding ring to lock it in place requires at least 1, 5 or 6 point rubber tensioner (I use 2 per wheel). The
half moon cam over type needs a
chain tool to install. I prefer the type with one latch instead of a latch and multiple cams and a special tool with 2 tensioners holding them tight on each of my AT's for off road ice, snow and ice under mud. They work fine on pavement covered with ice, a bit rough but comfort is not why we put them on.
Cables are easer to install then most chains, are lighter weight, and require less clearance on all sides so bloc may have more room for the remote res lines. They work very well for on road ice traction. They are a quick and easy improved traction devise when needed and they came with pictures to help with the install if you haven't used them for a while. I now have a set of 4 cables from
E Trailer that resemble the Z8's for going over the passes on short notice when snow tires are not enough. I intend to only use cables off road on a predicable FS road and for a short amount of time.
If you find yourself off the predictable FS road, be careful spinning with cables in reverse. I threw a cable off the front tire last weekend. It unlatched on the inside possibly from the cross bars rolling on the tread and giving some slack were it should not be. I have modified my cables since then.
Chains are part of my Minimum Equipment List in addition to my recovery straps and stuff.