Drop Rate

So I have been playing for a few days here, but I still can not figure out how exactly the drop rates exactly work here.

All I could find on the website is:

From what I could gather through playing:

• Act bosses + council members drops are extremely improved (probably always full game quest drops + increased mf)
  
  
• Super Chests seem to drop a bit better
  
  
• Drops in LVL 85 areas / cows seem to be mostly unmodified, or only slightly improved
  
  
• Didn't run summoner/countess/nihl much, so no clue there.

Does anyone have infos on how exactly the drop chance is modified?
When is it 10x when 1x and how those this manifest?
Anything else I am missing?

(Sorry I like the theory crafting side of d2^^)

 

Countess can drop up to lo.
Nihla drops elite uniques more "often" (still requires a lot of luck, though)
How it exactly works? I dont really know, but what i know is, that the drop rate in general was raised. You can try it, make a baalrun on bnet and here, compare the amount of items dropped and you will be surprised, how huge the difference actually is.