The R5 Astromech costs 5 points. That's exactly the same as a Hull Upgrade for the X-Wing.
The R2 Astromech costs 6 points. That's as much as the Shield Upgrade for the X-Wing.
So, at first sight, it seems like the Astromech are very valuable if you use them twice per Match. Otherwise you could very well use the Hull or Shield Upgrade instead and save an ingame action (R5) or don't get a weapon disabled token (R2).
But maybe it's not that simple. What do you think?
Are the R5 and R2 Astromech valuable? Do you actually use them?