None of the Apple tips work for me, they all leak outside noise and slip out of my ears. I've tried nearly every 3rd party tip on the market, the AZLA ones are the best but with caveats. The Xelastic tips [0] provide the best comfort, noise cancellation and stay in your ears perfectly, but they wear out and become too soft quickly - like every two to three months. The Max tips [1] are durable, stay in properly, and are so comfortable it's easy to forget you have ear buds in. They're not so great at the noise cancellation though so I tend to use these as my every day tips and swap them for the Xelastics when I'm going on a flight or somewhere where the ANC is more important. I haven't tried the Crystal ones yet.
[0] https://store.azla.co.kr/collections/sednaearfit-series/prod...
[1] https://store.azla.co.kr/collections/airpod-pro-ear-tips/pro...
Edit: I didn't know the Crystal ones existed until posting this, so ordering some now to see if they're the best of both worlds. If I remember, I'll report back.
The only thing that works for me is DIY tips.
I buy Comply 600 Core Series (size medium), tear the comply foam off the plastic tube, then place the foam around the Apple silicone tips (size large).
None of the Apple tips on their own seal correctly, nor do any of the numerous third-party tips that I've tried, including hybrid silicone/foam tips.
I get about 6 months out of the foam and they fit in the charging case modified like this.
I tried that one too but they'd squeeze themselves out as the Apple tips' silicon is the smoothest substance known to humanity.