The QC 20 is probably a better bet for exercise, since the 30 is a neckband style (but i could see that as a matter of preference). I haven't owned that particular model, but I have used the soundsport, which has a similar structure and it is pretty secure when moving around.
The only thing to be aware of is that every ANC IEM (that I know of at least) has a "box" on the cable for power. It might not be the best match for exercise. Your budget gives you some good options though. For example, you could get the qc20 at list and still have enough left over for something like the MEE M6 pro, which is what I use for exercise or other "hard work" scenarios.
I know you asked specifically about IEMs, so I won't belabor it, but if you went over-ear, you open up even more options for yourself. I get, though, that IEMs are the solution for a lot of use cases, and in my opinion are pretty hard to beat for exercise.