I decided to change from my pro 2s with lightening to the USB C version a week ago. I enjoyed the lightening ones and the medium tips fit me perfectly. Since changing Pros the new medium tips don't seem to fit as well. I thought the actual airpods would be exacty the same size so I can't explain this. Also the noise cancellation doesn't seem anywhere near as good. When the TV is on in the background, I can hear it a lot more than the lightening Pro 2s. I am wishing I didn't change over now