i have and have been using for quite some time an 18 gauge nailer/stapler that staples just great. it also nails just like a nailer/stapler does which leaves a large staple sized mark. i would like to buy a nailer that is only a nailer (in hopes it wont leave a mark) and leave my combo to just be a stapler.

should i get a 16 gauge nailer or continue with 18 gauge? my primary use is with 3/4" birch ply and occasional 1/2" ply.