I am over the moon... I have never been able to wear AirPods or AirPods Pro as they would fall out even sitting still, even when I tried foam tips. I always gave them to my wife who loved them all and uses AirPods Pro 2 currently. I tried for 9 years. After the really positive reviews of the new fit of AirPods Pro 3 I took a chance and ordered two pairs to try, like a sucker again... they fit me PERFECTLY straight out of the box, medium tip!!! Secure, shaking my, etc. they stay in... its like an entirely different product for me. I havent yet run in them and gotten sweaty but I strongly suspect they will be fine.
HOWEVER to my shock, they don't work for my wife. She wore the XS tip in the APP2 and APP3 medium... falls out, S falls out, XS fits "ok" in the left ear and falls out in the right, XXS (the new smallest size) fits "ok" in the left ear and stays in the right only if she twists the AirPod downward into her ear canal and she has lasting pain even after a few minutes. The acoustic fit test shows a fail at all the sizes for her.
What a bummer... Apple fixed these for me and broke them for her... it just goes to show how you can try and fit everyone but there will always be a few it just doesn't work with. She isn't upset as she loves the APP2 but I know they already stopped production on them so in the long term it's going to be an issue. I don't know how dumb it would be to buy a fresh pair at the $100-ish discount they have and just store them away or something if they wouldn't ruin the battery.