Has anyone used the Geoff Gould Taper-Cores (tapered B & E; fit's 35" scale) ??? And if so, what do you think of them??? The ad says he's having these made again by the same company that made the strings he used to put on Modulus basses. Thanks for any info. All I know is that they're pricey and the info that is at - www.ggould.com/strings.html Thanks in advance for any input!