Answer: 1 ga

I am fixing to buy a finish nailer, and I've got it narrowed down to a couple (unless someone here talks me out of it). I've been looking at the Hitachi NT65M2 16 gauge nailer and the Hitachi NT65MA2 15 gauge nailer. (I already own the Hitachi NT50AE2 18 gauge brad nailer & like it).

So, what are the advantages/disadvantages of a 16 ga vs a 15 ga? Strength, power, weight, cost of fasteners? What criteria do I use to pick between the two?

Anybody have one, the other, or both & can pass along any learnings?

Any insight you have will be greatly appreciated!