Which of the original X-MEN members do you think had the most useful power?

This was the original team of X-men from the comics in 1963. Which of these do you think had the most useful ability?
Which of the original X-MEN members do you think had the most useful power?
Professor X - powerful telepath, who can read and control the minds of others.
Cyclops - emits powerful beams of energy from his eyes, and can only control the beams
Jean Grey aka Marvel Girl - telepathic and telekinetic powers.
Iceman- He has the ability to manipulate ice and cold by freezing water vapor around him. This allows him to freeze objects, as well as cover his body with ice.
Angel - possesses a pair of large feathered wings extending from his back, enabling him to fly.
Beast- ape-like superhuman physical strength and agility, oversized hands and feet, a genius-level intellect.
Select gender and age to cast your vote:
Which of the original X-MEN members do you think had the most useful power?
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