What Geass power would you prefer to have from the show/manga?

Lelouch - the power of absolute obedience. When he makes eye contact with somebody he can implant any command into their mind. This command can not be broken. Lelouch's Geass can only be used on someone one time, and there is seemingly no time limit; Suzaku's 'live on' command remained until the very end.

Mao - the seal of absolute sound. They never really go into the full extent of his powers, but what is known is that he can hear the thoughts of anybody within a 500 meter radius of him. If he focuses the power he can look deeper inside of a person's mind but doing so reduces the range of the ability. Apparently he can not control his power due to overuse, so he is constantly hearing everybody around him.

Charles zi Britannia - the power to alter memories. His Geass is ridiculous.. Like Lelouch he needs to make eye contact, and when he does he can create, alter, and remove memories at will. His Geass also allows him to seal physical abilities. For example, he made Nunnally blind and sealed off Lelouch's Geass as well as removed all memory of Nunnally, replacing her with Rolo. Nunnally was however able to break this Geass by pure will (perhaps because at this time he had lost his Geass). In Lelouch's case C.C. helped him. Later becomes immortal and loses his Geass.

Rolo - the seal of absolute suspension. What his Geass power does is basically completely block everyone's perception of time for a few seconds. If you're within range and he uses it the person basically becomes paralyzed. It has no limit to the amount of people it can affect. While time doesn't stop the people affected by it have no clue time passed, which makes it seem as if he is teleporting around. It has two major drawbacks; first it can't stop physical objects in motion such as bullets, so if he is shot at from someone outside his Geass range, the bullet won't be affected whatsoever. Secondly overusing it simply kills him.

C.C. - the power to be loved. Basically her Geass made it so anyone would love her. Like other Geass users it started in one eye, and eventually became permanent in both eyes. So she lost control of it causing everybody to love her. I think when she became Immortal the effects stopped because its shown that villagers who used to be under the power attacked and killed her..

Marianne vi Brittania - power to transfer her spirit into another person. The ability was only used when she was dying so she transferred her spirit into Anya (Knight of Six). Towards the end of the series you see Marianne take control of her body. She can also go back to her body as long as it is intact. And also when she controls Anya's body she can talk to C.C. telepathically.

Bismarck Waldstein - the power to see the future. Very simple power; he can see a couple seconds into the future. When he used it he could see the trajectory of Suzaku's Knightmare, like where it would be. However due to Lelouch's "live on" command it was rendered useless. The power is seems to be permanently active so he has his eye bound shut.

Jeremiah Gottwald - the Geass Canceler. Just like it sounds - his Geass (if you can even call it that) cancels out everyone elses Geass. For example, after he recieved the ability he used it and everybody nearby under Lelouch's Geass was cancelled. Shirley was in range when this happened, and she suddenly remembered every event that Lelouch had blocked out of her memory with his Geass. No Geass can be used on Jeremiah. (Lelouch can use his geass on these people a second time once cancelled)

I was going to say either Lelouch or Charles, but then I realized multi-voting was not enabled, and I also realized that I had to pick just one. I meant to pick Charles. Assuming that you could alter memories, you would be unable to be defeated, for the most part. You could get away with anything you wanted, and even take over. Like, controlling the country, government, other governments, local areas, stores, literally anything you could think of. It would be an ultimate power, surpass-able only by invincibility and immortality (immortality is not always good).

I would have Rolo's geass, because it is really useful to get out of tough situations. Even though that the more you use it, the more it would hurt yourself. It's still a reliable power.