Road & Track is being generous. I've replaced the struts on every one of the nine cars I've owned over the last fourteen years, so I feel that I speak from pretty solid experience here: if your car has over 60k miles, the front struts are significantly worn, and the rears aren't far behind.
Particularly on a car whose handling is a very important part of its' personality (i.e. NSX), it makes no sense to skimp on things like tires, brakes, and struts. In the case of the latter, I've had good luck with Bilstein, Tokico, and KYB. Frankly, for a car like the NSX, I would make room in the budget for the Bilsteins - their reputation is well founded.