Has anybody ran into any research about whether there is an inflection point where Legendaries become more common? If this is possible I would assume that you would need a lot of item or paragon based magic find + high MP MF bonuses to reach this inflection point. And that would be a good argument for running at higher MP even though the pure XP efficiency of MP0 is clear to most.
Stated a different way, if you are looking to maximize your legendary efficiency it might be that higher monster power is the way to go.
I have seen (on here somewhere I believe, it was a while back..) some indication that 300 and 350MF were break points for more consistent legendary drops.
Personally (and I know, this is not a reasonable sample overall) I see noticeably more (consistently) Legendarys after breaking 300mf.
And, even though I totally realize that lower MP farming with higher MF is FAR more efficient then at higher MP's, I have consistently found more Legendarys at higher MP levels (5-7).
Edited by AudioCG, 14 December 2012 - 06:14 PM.