those guaranteed rares don't matter though because the max number of affixes a guaranteed rare from a boss/elite is 4. You will never get 5 or 6 property rares from them.
Since I read this post I identified a dozen of guaranteed rares and they all had 4 affixes (if anyone is interested I have 312 mf including the 5 NV buffs). I know a dozen items is not a meaningful sample size, but I wish I never read this post !!!