So I know there are 7 types of probes: Mining, Research, Battle, Storage, Booster, Duplicator.
What I've found so far is that Mining probes are best gotten from quests (primarily, these seem to be my rewards) and salavging Mech field items, and that you can unlock Battle probes by doing a quest at or around chapter 9 completion (via a sidequest in the hangar). Occasionally I'll also get a Research probe from salavging Mech field items as well.
I've seen that people suggest doing quests to get probes, however every time I check the quest board I don't think I've ever seen a probe as a reward. Kirsty and story quests are the only reliable source of probes that I've found so far, but by and large those appear to be Mining probes.
Is there a "best" way to get each type of probe, and if so, what is it?