guess I just be blind

lol whats confusing me is what Dan said Excalibur is calling the strings by one name and other places that offer strings are calling them somthing different I aint totally dumb, I understand what each of the Excalibur strings do and the pluses and minuses. there are 2 strings offered from the place I order strings from that I am unsure what they are in corralation to the Excalibur strings.. theres has been a lot of info offered regarding the strings but the the question I asked in the firs place I have not gotten ansered yet,
sorry for not getting the string thing maybe I be too dumb to own a crossbow..