Fwiw. ... The astra and astra s appear to be basically the same hardware device with slightly different firmware. When compared side by side they really don't seem to deliver that different outcomes.
The astra s ... May have a slight edge in close range sensitivity ... But your milage may vary and it feels very subjective. Neither device is great below around 40cm. As far as we can see the difference relates to projected laser grid.
The astra pro also delivers the same sort of depth data ... but has a different colour camera ... Which asks side note requires more complex solutions for depth to collect registration.