Just need to know

Action boy gives you +20 AP, somewhat useful if your Agility is low or to add 1 more chance to your V.A.T.S.

Center of mass is useful if you use V.A.T.S. alot but don't want to rely on trying for a headshot all the time to drop a target faster.

I would go with Center of Mass because there are way better action point perks available like Grim Reapers sprint and Nerves of Steel.

i love your wisdom rob and sadly action only 15 -_-

I actually think Action Boy is a bit better than Grim Reaper this time.

In FO3 Grim Reaper was godly since it gave you all your AP back, now it only gives 20 back after a kill, while Action Boy gives 15 extra at all times.

im using the 28 perk glitch so i might pick this up