My experience with Iron silk is the polar opposite of yours. I'd like see
it a little more limp, but found its abrasion resistance is outstanding.
FWIW, I liked it in 4 & 6 lb test. Didn't care much for it in 12, at least
for worm fishing. But it seemed alright for jerk bait/crankbait fishing in
that size.

RichZ©
www.richz.com/fishing