I have owned two F&P Vitera full face masks, and I love them. They were very comfortable for me all night long. My first mask was used when I weighed 295 lbs, and the second one was used at 235 lbs, my face really thinned out. I never had any issues with size or air leaks. I also have very oily skin, and the silicone was never affected by it. Occasionally, I get lazy and don't wash the mask, wearing it for two nights before cleaning it. Still no air leakage.
I appreciated the clip that attaches to the mask; it makes washing, drying, and reattaching the headgear to the mask easy without needing to readjust the straps. The hose elbow is also nice and easy to work with. The venting was acceptable, but it blasted my wife in the face when we faced each other. Additionally, I had to ensure that humidity levels were not too high, as that caused a whistling sound. However, this wasn’t a deal breaker for me.
One downside is the plastic piece that connects the headgear to the mask on the forehead, which I refer to as the "flax. " This hook broke twice, rendering the mask unusable. My first mask lasted 9 months, and the second one lasted about 14 months. I know this is the expected life span of the mask, but still a flax. Because of this issue, I'm rating the mask 4 out of 5 stars. If it weren't for the hook breaking, it would easily be a 5-star mask for me.