Black oil seed (sunflowers) works great for a hand fed treat/taming as well.
The only bird here that is not tamed down , and I don't think he ever will, is my Amherst male. It's just this bird's personality to be this way. I've had others that tamed down nicely.
The Reeves male , you don't want to hand feed ! In the summer when I find a big Grasshopper, I'll slip it through the wire for him. He doesn't even take the time to kill it, he is so concerned about ripping a chunk out of me !