Thanks everyone for your replies. I guess this debate is sort of like the chicken and the egg...no real right answer; just personal preference (with some good reasons to prefer each).
Jeff, heres a kicker for you
if you're gonna go wheelin, and get stuck, and go on a few 'winch fests' then synthetic is VERY nice to have............... for the GUY PULLING YOUR LINE!
once upon a time, at an unmentioned place somewhere i had to pull line for some president's silver rubicon cause he decided he didn't wanna play 'roll the Rubicon'. now, the weather sucked. it was raining nonstop. we were on a steep hill. a slippery, steep hill.
now, i'm not the most athletic member, i admit, but I/we could barely walk up this hill, let alone yank 100' of steel cable up it. however, that silver rubi had synthetic, and i could haul that line up that slippery slope.
so long story short, i thinkg 100% if you can afford the synthetic, go for it. when you have to spool it out and in, its 100% easier than the heavy steel line....... and us more 'husky' gentlemen will appreciate it all the more!