Ok.... no takers.... I'll bite.
I'm a dacron man. The stuff is strong, lasts forever and doesn't burn your fingers. I know it doesn't have the capacity of gell-spun but I've never been 250 yds into my backing wishing I had another 100 yds. For 99% of my fishing I'm sticking with dacron. I think the diameter and color are those last little details that make a nice reel look like the real thing.