I would chose time manipulation. Any of the abilities to slow down, speed up, reverse, travel through, would be the strongest imo.
My personal favorite is the specific one Nicolas Cage has in
Next. They describe it as looking into the future but it really is living through a moment then reverting time back to before that moment. A sort of do-over. Its most pronounced when he meets Jessica Biel in the restaurant and has to attempt several tries at the situation to find one where the outcome is what he wants.
If I had the power to "reset" time to an earlier point with the knowledge of the time I lived through I would be pretty damn invincible. Dodge bullets, win at stock trading, be a perfect athlete (with hard work to get the baseline physique needed), be a perfect gambler,
never have that thing where you wish you came up with the perfect come back 5 minutes later. For me the big drawback of time manipulation or travel is that you are still living your set number of years on this earth, only not in a linear fashion. The "reset" ability lets you live those years making the best choices possible, and you even get to "remember" a much longer life.
And I would use it totally selfishly. I would be a supervillan, not to take over the world, or harm people. Just in the way that I would live my life outside the rules and do what I want. The best part about that is that no one but me would know I am doing it since to them it just looks like I made the right choices at every turn.
There would only be two true fears in life.
1. dying to something unexpected with no time to react.
A sniper bullet to the base of the head that would kill you instantly for example. Anything else you could go back and reset to before and dodge.
2. Never having a real relationship/love
You would have to have the strongest willpower in the world to not use it on your "inner circle" of friends and loved ones because once you do, you will have taken their free will away.
Other than those two, you would have all the money and free time in the world to do with what you want. Hell you could even steal, kill, and break most any law. If you get caught just reset and either do it better or don't do it.