From what I've read and seen, synthetic line is safer when it breaks, but it also breaks much more often the steel line. Every other post here talks about how easy synthetic rope is to splice and how it doesn't whip when it breaks. How many people have broken a steel cable? Any personal stories? I've done a bunch of pulls with steel, and one with synthetic. The synthetic line broke at the eye, and had to be spliced to complete the pull. That's not a fair report because the synthetic line was already frayed at the eye before he tried to use it. The synthetic is a good product, but it requires as much or more care then steel, and you have to be careful handling it to prevent damaging it. If you don't take care of it, it WILL break, same as steel. The difference is, steel will tolerate a lot more abuse, and be much more dangerous when it does let go.
As for handling safety, the synthetic is easier to handle, but if you're winching, and not wearing heavy leather gloves, you're doing something wrong.:looney:
Personal opinion:
What do you use it for/how often? On a dedicated trail rig that runs every weekend, or a dd/trail rig that might get stuck and winch once a year? If you hardly ever use it and it just sits in the sun and rain, go steel.
Do you have a lightweight 3800lb XJ or a 5500lb behemoth? If you went to the trouble to build a lightweight rig, the extra 30-40 lb off the front will be noticeable. On the other hand, if your front bumper weighs 250lb bare, and the front axle weighs 700 lb. the weight reduction isn't going to help much.