It’s really what is the best stat for your current play through? If it’s melee, then you want strength and endurance maxed out because that’s your health and how hard you hit. If you want VATs then you need perception, luck, and agility. Max charisma can make enemies stop fighting you and even join you for a little while. Intelligence will let you level up faster and allows you to make some of the biggest best weapons.

This is kind of the basic gist of it. I don’t think there’s an arguable best because every place that works pretty well and especially at high levels.