Been wanting to go with Spectra lines. Thought I'd save some money, bought some inexpensive stuff from an E-Bay vendor in China, big mistake. I've ordered stuff from China before with good success, except this and one other exception. Was labelled as Spectra but was not. For this next time will go to a US fishing supply store for the genuine article. Supposed to be 70 lb. test, lines were very stretchy, struggled to control my Ringmaster, hair raising flight with no down control in a very tight loop above, 2.5 second laps on a full tank. True Spectra AFAIK has little give.

Live and learn, had decent luck with Sullivan synthetic lines before, and of course steel cables have always been reliable.