Purified bindings or Black Blood?

[Khailik]

Ok first off keep in mind that I am only Heroic geared.

Ok so Askmrrobot is telling that http://www.wowhead.com/item=102310 is BIS for me over http://www.wowhead.com/item=102293 but I am really really unsure about it. I lose a small amount of mastery, gain haste, lose the crit damage, and spirit is useless to me so idc about that. If I use the Black blood I will end up with a stronger int proc but I'm still on the fence. Anyone had to choose between these two before? It seems to me that purified bindings would be a definite win over black blood but not according to AMR.

[Deleted]

Mrrobot is taking level 100 in account, for which the black blood is far superior. Bindings loses it´s efficency at 91 while black blood remains mostly the same at that tier. Right now bindings is better, but once past 90 black blood will outdo it massively. Of course at 100 they will still be outdated. But at 91+ Black blood is better.