Seemed pretty clear to me..
It's something cost effective if you already have 20mps, but not good if your mps is only 10.
I would like some clearification on this. To a newbie like me, it isn't obvious what is better when for what Demigod. + or %. Do regen rates differ for each Demigod?
Elementary Math.
Press c and hover over mana to see your current MPS. You can figure out what is best to buy after that. =]
BMPS = base mana per second
PMPS = increase mana per second %
AMPS = straight increase to mana per second
FMPS = final mana per second
BMPS(1 + PMPS) + AMPS = FMPS
(BMPS + AMPS)(1 + PMPS) = FMPS
So, which formula is it? Or possibly some other less straightforward formula involving total mana, level, and so on.
This is a better question..
It is base+mps items+% last.
Multipliers are added last on all formulas in DG afaik.