Is ems a borrowed power(aka a power one relies upon).
Certainly. With ems, a ms user would just be blind. It may not give some sort of major power upgrade like kcm might, but it gives the ms user the power of eyesight. Which when the person is a sharingan user, eyesight is everything.
Also ems seems to refine and strengthen ms techs to some degree.
The reason many see it as a borrowed power, in comparison to kcm and bm, is because all you have to do to get the power, is pop those eyes in.
With kcm the user must always go back and fight for more chakra(if the bijuu is not friendly), and bm, the user must somehow get the bijuu, who is full of hatred and despises people, to like and support them.(and you could even lose the support as well)
They still are borrowed power, but they require continuous maintenance to keep the power. Also implanting the ems has no negative effects. Being a jin does, as it lowers your personal chakra level, and if you are not a perfect jin, your chakra control is affected as well.
So the simple conclusion is. Ems kcm BM= All borrowed powers. Ems has zero sideffects, while kcm does.
Not sure why you made the thread though? Are you just looking for a fanboy war?