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Hammer: Turbine Curve in Relation to Quadrant Curve

Hi
I wish to clarify how the Turbine Curve should be sourced for inputting into Hammer in relation to which quadrant curve is being used.

I understand the Quadrant curve is defined by the selection of the specific speed. In my case, I am picking a specific speed as close as possible to the actual turbine I am trying to model. For example; My turbine is 200, I am picking 170 in Hammer.

When selecting my turbine curve (H vs. Q), should I try to match this to the specific speed of the quadrant curve in Hammer (Ns=200) or to the specific speed of the actual turbine (using turbine hill chart) for the actual turbine (Ns=200) even though the hill chart wll not match the qadrant curve being used in hammer? Which will produce the greater accuracy?

Thank you for your assistance.