See, the chocobo barrettes were gifts from Aeris, because they don't have chocobos in Tohru's world, but they do have chocobos in her world -- which is also Sephiroth's. And they also have moogles there, of course, but after sober consideration, Tohru decided the moogle barrettes wouldn't be good for him because the little fluffy red pompon jingles; but the chocobo barrettes don't make noise, they're just fluffy like marabou feathers. So they're obviously MUCH more suitable for someone who has to fight all the time than something with a bell in. So it's all settled! XD