I went Galaxy S22 Ultra (ultrasonic) to Pixel 8 Pro (optical) to Pixel 9 XL (ultrasonic).
My impression was the performance improved over time with the Galaxy and Pixel 8. I find the Pixel 9 worst overall, but figure they’ll improve it in software.
No data to back that up.
It mostly struggles when my hand is wet. I miss the Pixel 4’s face unlock.
Frutiger Aero, I think.