I recently traded some old spiros for a Olive G which I absolutely love so far (even though I think it's 11 months old). The G string has enough of the gut snap that I really missed going to Evah's. My question is that the guy I got the G from has a D as well, should I check it out, or is the magic Olive really only the G? Also, how long do olives usually last. I've heard about falling apart issues, but it wasn't clear to me whether that was time related, or other wise.