Best 9 mm weight?

What bullet weight would be best for target/plinking and carry? Using W231 powder.

To me? A 115gn JHP. Best for Self Defense, best for accuracy. Buy in bulk from Precision Delta or Zero bullets from Powder Valley (may not be able to find anything right now) for practice/fun. Buy name brand, high-performance for self-defense.
231/HP38 is NOT the best powder for 9mm Luger. Go to Power Pistol for accuracy and performance. Any powder faster than PP will go phew, phew without issue, but is that ALL you want from your loads?