WHO IS THE TRUE LEADER: DAVID OR SAUL

So he sent and had him brought in. He was ruddy, with a fine appearance and handsome features. Then the LORD said, "Rise and anoint him; he is the one." So Samuel took the horn of oil and anointed him in the presence of his brothers, and from that day on the Spirit of the LORD came upon David in power. Samuel then went to Ramah. Now the Spirit of the LORD had departed from Saul, and an evil spirit from the LORD tormented him.Then Saul sent messengers to Jesse and said, "Send me your son David, who is with the sheep." So Jesse took a donkey loaded with bread, a skin of wine and a young goat and sent them with his son David to Saul. David came to Saul and entered his service. Saul liked him very much, and David became one of his armor-bearers. Then Saul sent word to Jesse, saying, "Allow David to remain in my service, for I am pleased with him." Whenever the spirit from God came upon Saul, David would take his harp and play. Then relief would come to Saul; he would feel better, and the evil spirit would leave him. 1 Sam 16:12-23

Who then is the LEADER: SAUL or DAVID?