My biggest requirement was that my T not remind me in any way of my mother. My first two T's felt very similar to my mother in personality, and they simply did not have the knowledge or experience to help me with my issues.

My current T is very similar to me in personality type, which I find helpful, as she can more easily understand where I'm coming from. Also, my current T is very intelligent and experienced, which means that I have more confidence in her abilities.

Basically, I prefer a T that is more introverted, okay with silences, very perceptive, willing to admit when she doesn't have an answer but also willing to take the time to find an answer or help me come up with one. I find I work better with someone that is well read and can match my intelligence.