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Super speed. So... Let's say you can move at light speed, and let's just hand-wave away the problems like turning everything in front of you into an exploding ball of superhot plasma or shattering the Earth's crust with every step. We'll just take as a given that you can actually use this power.
Would you want to?
Let's be clear... This isn't teleportation, this is being able to move at super speed. That means you still experience all the motion between point A and point B. That could go one of two ways:
That's why the comics always gloss over what it's like to have super speed. The dark side of it is that for it to be anything but terrifyingly destructive to the entire planet, you have to have control. And in order for you to have control, you have to be capable of seeing where you're going and reacting to obstacles. That means sped up perceptions, and thus the subjective hell of experiencing every single step you take at super speed.
I would guess that you have seen the first episode of "The Boys"?
Anyway, option 1 is very clearly superior, even if incredibly boring, because it includes not becoming tired or hungry during the trip. You kinda would get to zone out for months at a time, like a super long scenic vacation.
I've seen an explanation somewhere that I likes which is super speed and super reflexes are like tensing two different muscles.
You can make your body move at 10x speed to run across town (even 2-3 speed makes you faster than the fastest humans and 5* is like a car going quickly), then you use your reflexes 3 times faster to make that superspeed feel like only 3 times your natural speed. You can also seperate them in other ways like buying yourself time in an exam by speeding up your thinking without actually increasing your muscle movement.
Your mental and physical speed being like tensing muscles also means you can have them kick in like a withdrawal reflex. As the air pressure changes before an explosion or bullet hits you, you involuntarily crank your limit to 50x speed (or whatever is required) to dodge.
It also has the obvious weakness of being exhaustable. It's worth mentioning that 10x speed is absolutely enough to do most superhuman abilities, and 3x speed makes you basically better than most humans, not just at running but also dodging and punching, and it's absolutely up to the storyteller to decide if such a low speed multiplier exhausts said speedster or if they can maintain that indefinitely like the muscles we use to stand.
Also even if you are protected from the repercussions of moving at super speed, anything you move isn’t. If you carry your friend across the street, your friend is now pulverized and probably burnt to a crisp. If you move your water bottle, congrats on delivering a pressure vessel of steam to wherever you just went. Acceleration that fast and impacts at that speed would destroy basically everything you touch while moving at super speed.
Related song, The Ballad of Barry Allen:
https://m.youtube.com/watch?v=YMe1qlyuMXQ
Holy crap, that's perfect!
If you have the power of super speed you can control when it’s active. Likewise you can adjust the speed your mind processes things to always ensure you’re 1:1 with your frame of reference.
Being 1:1 with your frame of reference is actually one of the problems.
Say you're Barry Allen and you're running from Los Angeles to New York city. Given the nature of your powers, you arrive there basically instantly as far as anyone else is concerned.
But for you? You experience every single footstep you took along the way. You arrive bored out of your mind and possibly going insane after running across the continental United States in, for you, months of being absolutely alone in a world of utterly still statues and an unmoving sun.
That’s why I said you can adjust it. But if you did it in a flash you wouldn’t be able to avoid obstacles in time and you’d be a fine red mist.