Vessel of acceleration

[PimpJuice4]

so ive seen a couple dks with this trinket,is it actually good(im unholy)or are they just using it to boost there ilvl cuz ive seen some people like mages and stuff(the top geared person on guildox has the heroic one equipped and hes a affliction warlock) with the heroic version and i figured they were just using it to boost there item lvl

i mean,i know its got like 400 strength but i thought crit wasnt really that great for dks.or at least for unholy