Replying to Look Pivot 12s or 14s. Fischer Attack 13s or16s

I'm 5,8 155, I mostly just ride park, I would call myself the average park skier, not terrible, not doing dubs or 630s out.

I've maxed out 12 din bindings and 13s before (original rossi pivots/griffons), and I feel like a 12 might not cut it, but it's been a while since I've gotten a brand new pair of bindings.

I'm trying out FTs for the first time, so first of all which of the two bindings work best for FT?

Which bindings will be best for me, and what's the deal with most of the Attacks not coming with brakes?

I know the main difference between the 12s/14s, or the 13s/16s is a combo of plastic vs. metal and therefore overall weight of the binding.

What's the better choice?

+k for help