I would advocate inspecting the springs for sure. If DIYing I probably wouldn't change them unless they've done loads of miles or show signs of distress. If paying for the job to be done, then th elabour is the major part of the cost and so changing the springs on a TPM basis would seem sensible.
I'd also advocate changing all four shocks. If the fronts are tired, chances are the rears are too and your stability in corners is dependent on the rear shocks (rather like having your best tyres on the back).
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