I had two mentors myself - one in Australia while I was living there and one in TN, which is where I trained in HT before moving to OZ. I loved both, but they served very different purposes and roles.
My Australia mentor was very meticulous and helped me with the editing, writing, gave criterion examples, included me in community service projects, etc. My TN mentor - so far away - discussed energy and techniques with me and helped me grow and expand. I loved BOTH.