Lady persephone and Leanne Halyburton Overall. I would only suggest those two at this point, they have been the most consistent.
I know you said Name One, but there is just no ONE Good psychic overall. They are good at particular things.
Lady Persephone has proven, over time, how right she was about particular people and their reasons/motivations for feeling or doing things. She would predict
emotional reactions and then predict events, and they would happen. She is NOT good with timing whatoever. Many things she said happened years later. If
you want insight into emotional matters/relationships, shes the one I think.
Leanne Halyburton, although she can be very annoying with her preaching and stories, has proven over time to be 80 percent right in terms of predictions
into relationships, career, random stuff she sees. Her insight is realistic, not negative. 10 Predictions Only, you can't ask her direct questions because
she will preach or spin biased views based on her assumption of your question.
Yona would be a trailing third, but I would not read with her again. Shes become way less accurate over time.
Anyway, its kind of bittersweet looking back. Everyone else has been a mixed bag.