115gr and 124gr shoot “flatter” than 147 gr – heavier bullets go slower and need more arc to hit something farther away. As for your EDC, better stick with your self-defense round that is JHP as that is its best intended purpose.
115 and 124gr is more of a training round so you don’t shoot all your hard-earned $$ away. 147gr is a little more expensive – my personal purpose is for a PCC (pistol caliber carbine). Others may use 147 with handguns or PCCs that have trouble feeding smaller bullets.
Hope that helps a little - if I’ve forgotten anything I’m sure someone will fill us in! Keep on reading on the subject…