I think I would prefer stopping time over teleportation. I'll probably won't be able to save anyone from a fire (depending on how fire would work in stopped time), or just drop a bomb into the desert, but I feel like if I kept my current life, i.e. not become a well known superhero, these points wouldn't be particularly useful.
The ability to stop time would imho be more useful to me. I could take a multi-hour break just in the middle of work and nobody would know. I could have my five more minutes in the morning without feeling guilty or just have a long vacation without using my vacation days.
Yeah, time stopping is a good choice, too. If we're going to use it for long periods (like for long vacations, for example), that does raise the question: do you still age while time is stopped, or does your ability pause aging, too?
I want to make measurements by observation. By looking at a car I know its velocity. By carrying a bag I know exactly how heavy it is. By hearing a sound I know all the frequencies within.
It isn't super useful for anyone, but I think it would be so cool if numbers just comes up next to an object.
Stopping time for sure. If not for the very simple reason of being able to sleep as long as I want/need. Imagine essentially not having to go to bed at night (you do but you’ve stopped time during your nap)
You nailed my top two. Teleportation would make travel super easy and would be the only thing that could get me back to an office for work - got to keep my day job so people don't get suspicious of my powers right? Stopping time is also cool (for extra sleep I swear!) but with the obvious caveat that it's not "all molecules freeze and you can't breathe and you die" style time stoppage but the more sci-fi "you can still move around and do stuff, time just doesn't pass" kind.
Teleportation would be an amazing power, but in the interest of "fairness", each power should have realistic limitations. Based on your descriptions, you would also need the power of remote vision so you don't teleport into an object or person. I feel like that's an extra power.
Also, teleporting seems like it shouldn't be effortless, and there should be some kind of limit to the mass you can teleport with you.