Your chance to teleport into a wall is way to high. I mean, thats 1/2000 chance....if you teleport a few times a day you'll be dead in a year or two for sure.
It should be more like, you have the danger of teleporting into matter and dying, but that is avoidable if you can see the place you are teleporting to and know there is nothing there. Basically you never MISS where you are telporting to, but unless you know for sure there is no matter at that location, you might end up dead. Even a fly could be deadly in such a case..which still makes teleportation too risky.
The other concept of teleportation is displacement, where you displace the air (and objects in that location, before teleporting into it. The problem occurs if the matter is too solid to be moved by your amount of mass. So you can displace a baseball flying through the air you are teleporting into, or even water (along with air....or a fly, or even a cat), but if you try and teleport into spot with a parked car....you die...possibly even going BOOM and killing alot of others as well.
That would make the most sense and be the minimum amount of control I would ever consider using teleportation with, otherwise it's just too dangerous.
Flight of course is preferable to superspeed in almost every way, especially when can already move so fast while flying. Super speed is actually super dangerous unless you have some kind of super durability as well....running into any object at very fast speeds would be....super dangerous...and at such speeds running into a wall would be instant death...and easy to do!!
Flying though, while still dangerous in some ways (Especially when learning!!), allows you to go slow if you want, can be used to make you tons of money in many ways (entertainment, saving lives etc)...and would just be awesome. As long as your power can't just fail sometime....causing you to fall to your death, flying is by far the best and safest choice here.
Teleportation could possible be the most game changing/world changing if there are set limits to it. If you can teleport as far as you want, and don't need to have already been there before, and especially if you can bring other objects/mass with you...it could drastically increase the speed we could colonize our galaxy, and you wouldn't even need to teleport to other planets etc, just into orbit/out of orbit with objects to quickly build up our space station.