I bought the P30i AirFit and the usage experience was terrible for me.
Noise - due to the way it's designed, the air is coming from the top and down the dual air tubes on either side of my face. For a side sleeper like me, the airflow sound is very close to my ear and the situation is exacerbated when I sleep on my side. It's extremely loud and I have a hard time falling asleep.
Bruised nostrils and tight fit - the nasal pillows are pressed up tightly against my nostrils leading to a bruised nose and I have a hard time getting a good night's sleep ever since I bought it. This doesn't go away no matter how I adjust the pillow mask as the nasals are practically jammed up the nostrils.
Also, if the nasal pillow is not seated properly, it could lead to no air output which leads to me nearly suffocating as I tried to breathe in but there's no air.
Overall it was just a terrible experience from my previous nasal pillow (forgot the brand but the design is a single tube that comes from the top of my head and down to my nose in front)