You know, it's so hard to put these experiences into words that do them justice. When we speak of Guides, Allies, Guardians, Benefactors, Higher Selves, etc. we are all trying to qualify and quanitify an experience that is both unquantifiable and unqualifiable. We use these terms because they somehow come close to helping establish an understanding of what we experience and then in turn share that experience with others. When we hear a term like "Higher Self", it makes us go, "Yeah... that's it - or at least close enough to "it" to work for me," and so we stick to that label. but in reality, its an attempt that falls short every time.
My point is that whatever term you use, if it's closer to "it" for you, then that's what you go with. Doesn't matter if it works for others or not.
At least in my opinion (for whatever that's worth.)