AirPods Pro 1 always had a problem with falling out over time, similar with AirPods Pro 2 until I stuffed the tips with foam and wedged them in really good.
I just tried my AirPods Pro 3, and they feel incredibly comfortable and secure. Unfortunately they also came with a 27% charge in the earbuds and 48% in the case so I’m currently letting them charge up before a workout to see how they do. It’s a little annoying that the batteries weren’t more fully charged in the AirPods and case.
In the brief time I had them in after pairing they were super comfortable and had noticeably better ANC compared to my APP2. It’s a very different fit. What’s absolutely shocking and baffling to me is that the case is very noticeably larger than APP2. Yet there’s less case battery somehow. I don’t know how Apple managed that. Bigger form factor, less battery?
I’m gonna let these charge for a bit, then get to a nice workout outdoors by the local airport and see how they do compared to the APP2 I’m used to.
EDIT:
Ok, walked and jogged for a couple of hours with the APP3 in using the medium tips. They are a clear improvement over the APP2 in fit and comfort. They do fit deeper in the ear than APP2, but it's not uncomfortable and took all of a second to accustom myself to it. They remained comfortable for two full hours while exercising and felt completely secure, compared to APP2 which I have to push back in sometimes.
I never once had a feeling of my ears being plugged, which sometimes happened with the APP2. ANC is excellent and noticeably better than APP2. A highway around 500 feet away from me was completely silent with the APP3. With the APP2, I can still hear traffic on the highway. Closer traffic along my route, around 35 feet away was audible with APP3, but not bothersome. I didn't have to raise the volume at all to hear above passing vehicles, which I sometimes had to do with APP2, even with it adapting to environmental noise. There were no large or particularly noisy aircraft flying near the airport while I was there today, but a few smaller 2-6 passenger prop planes landed and took off in near total silence from my perspective wearing the APP3. With APP2 in, I can pinpoint a plane's location long before I actually spot it. Today I always saw them before I could hear them, and I had to focus to hear engine noise. There was a mid-sized jet taxiing near my route with loud engine whine that was very audible with the APP3, mostly in the high range. It was around 400 feet away. The noise it made was annoying, but the APP3 adjusted volume enough for me to continue listening without needing to make a manual volume adjustment. All in all I'm really happy with the fit, the comfort, and the ANC. I don't know if it'll last. Apple has seemed to make adjustments to ANC in firmware updates for previous APP that negatively impacts ANC. I've not done the hearing test on these, so this is "out of the box" sound, not adjusted.