I believe Aizen's Hypnosis is the more potent of the two...
It controls the five senses to the point where it can make the target misinterpret another person's form, shape, mass, feel, and smell to be an enemy's. The initiation condition for the hypnosis is to show the enemy the release of Kyōka Suigetsu. After seeing it just once, this person will completely succumb to the hypnosis. Afterwards, every time it is released, this person will fall under the thrall of the hypnosis. The hypnosis is long lasting; the Visored are still affected by Kyōka Suigetsu even though they were hypnotized at least 110 years ago. Because the spell works when one see the ritual, those who cannot see are consequently immune to the hypnosis.
When Aizen turns off the hypnosis by force of will, the image shown melts away or shatters. The complete hypnosis of Kyōka Suigetsu is absolutely flawless; even if the target is aware of being under the hypnosis, they cannot resist its influence. The hypnotic abilities of Kyōka Suigetsu make it a highly useful tool in combat, for Aizen can create simple or complex illusions to deceive his opponents.