User blog comment:PegasEVinhoVerde/Spirit Visage on adc/@comment-4834593-20130801154730/@comment-5331854-20130802134356

Health is nice, but in the current meta (Health stacking), it gets dimished by an abundance anti-health champions and Items, like Vayne and BotRK (the latter one is often seen on ADCs and bruisers).

20% CDR is always useful, but somewhat wasted on some ADCs who relies more on AAs than skills (still, quick ult is quick ult). CDR is not always a desirable stat (even counterproductive for Energy champs if you tend to spam).

But still, every single item in LoL is situational, some just fits into more situations than others (Wards are universal, though. Buy more wards, midlaners, toplaners and junglers). Build clever, build to be better, build to counter the enemy.