So, I’m using a large f20. My size is medium but I find the large much more comfortable. However, it registers more leaks for me, so my score is lower. Other than the statistics I prefer sleeping in the large, it’s an overall better experience. Is there any problem with this? Sure, my score is worse, but I feel I get a better nights sleep. Either way it’s pretty much silent, and when I wake up in the morning I often can’t even tell it’s running, and my wife doesn’t hear a thing either. These are so great! So, are leaks really that bad a problem? Can I just ignore it?