You could turn invisibility on and off as you like and there would be no time limit. Your clothes would turn invisible too, and you could decide whether the items you are holding would be visible or not.
There would be no limits on how many times or where you could teleport. The items you hold while teleporting would be teleported too. You would also have the ability to know if the place would be safe to teleport to, so you wouldn’t teleport and get impaled by an icicle or teleport inside a wall and get your insides filled with concrete or something.
Personally, I don’t know which one would I pick. Invisibility would be awesome for pranks and stuff, but teleportation probably would be more useful for everyday life.
Teleportation. I suppose it would be somewhat limited by the fact that teleporting to a place where other people might be would be tricky, since I absolutely don’t want to be caught.
Even with hesitation to teleport to populated areas, the ability to teleport home would be massively useful as a utility. I could also teleport out of danger in an emergency. I wonder if I pick up a person would allow me to teleport them with me, in which case then it’s got hero potential too.