i have a XCF 705R which i really like. based on my recommendation for using a fiberglass rod for crankin', my fishing partner went out and picked up a XCF 705. when i looked at it, i was quite surprised to see that it was marked as E-glass. at first, i thought maybe he had picked up a competitor-series CFC 685 instead as my XCF 705R doesn't say E-glass on it anywhere and i had always assumed it was S-glass. are the XCF 705 and 705R both made out of E-glass? i assume that the only difference between the two is that the 705R has a slightly stiffer tip?