Replacing spiral balances. Tip color recommendation?

A home owner from North Dallas says:
I'm replacing spiral balances in my builder grade windows. They're non tilt single hung sashes. I removed the existing balances and the tube measured 30" but they have no color coding. I stuck a scale below the sash and lowered it to get a weight estimate and it came out to be 23 lbs. The width measures 3/8". I'm guessing the S400-30 green tipped balances would be the best match? Pictures attached of the old balances and the bracket in the track.

Any advice is welcome!
User submitted photos of window hardware.
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Tom from SWISCO responded:
I agree, the Series 400 appears to be the best match. Based on your sash weight, I'd recommend our green tip.
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