Who was the best and worst Secretary of State between Kissinger, Albright, Powell, Rice, and Hillary Clinton?

Kissinger was the worst, a mass murderer of the worst kind responsible for thousands of unnecessary deaths in Cambodia and Vietnam. All the rest did credible work. Clinton has been very impressive. It was too bad that Powell was lied to by Cheney's gang and made to look a fool about WMD. Albright was very competent and Rice is no dummy.