I got a pair of the Drop Elex pads to A/B on my Focal MGs, and I really can’t hear a dramatic difference. Perhaps there’s a little more detail in the treble areas with the stock pads? The Elex pads seem, maybe, to integrate the different sounds such that each stands out slightly less from the others as compared with the stock MG pads.
Are folks really hearing a gigantic difference? Personally, because I like that detailed separation, I’m going with the original MG pads but again, for me it’s a difference so minute as to be possibly be fictional.