Where da cores at?!

So I have a question.

Should I throw cores at M4A and dummy link her to ×3, or hoard them to spend them later?

I only have one 5 star anyway.

Yes, the story dolls are all great (and you only get one of each anyway, so you have to use cores).
M4A1 is good and you’ll use her for the whole game. M16 you can wait on, as she has a strong niche use instead of general use; but the others are a strong recommend.

Since I went over 200 cores, I lost my reservation, and upgraded every single member of AR team.

Still have over 200 cores left.

And that’s after upgrading my G36c to x3.

That, a T91 and a Grizzly are my only 5 stars.