The packs definitely do not have the same functionality. Many have similar base functionality. Some add on additional things. Some are obviously missing basic functionality (Ship’s Cat?). Some haven’t been updated with newer functionality.
Astra does seem to be very well supported for updates. That’s why I purchased that one. There’s something to be said for purchasing Astra plus another, since you can set up a multi-configuration where you can switch back and forth or allow a pack to handle a subset of the commands.
I think the classified voice actors are all computer generated. I could be wrong.