the 555 is the better one... but beware... even the 555 have the imitation...
so, when buy this... make sure to check the engraving on the item... like mine, the lower arm... got 555 engraved/marked on it... that's japan made...
malaysia made 555 is more cheaper, but not that good compared to japan's 555.
even the tie rod end also got 555 engraved on it... happy buying...