Do a search on this as it has been covered many times.
I read posts about feed back and it has me puzzled. I don't understand what it is. Does the cue tell you that you hit the cueball too hard, too soft or in the wrong place? I think the feedback comes more from the result.
I have 12 cues and they all have different types of joints: SS, ivory, radial pin, piloted, phenolic, flat face and conical. When I am shooting I cannot really or honestly say what the joint is by feel. I think the tip and wrap will change the feel of a cue more than the joint. I have been told that ivory makes the cue feel softer than SS but I am not that sensitive to the differences.
My opinion is the joint is basically a means to joint the shaft to the butt and the style or type is mostly for decoration.