When I shaved I used a Norelco, in my opinion they are the best. I had one for for the twenty years I was on active duty. Used it every week day, sometimes twice a day. Had to replace the blades twice, when it got to pulling. Still got it, and it works fine. It's over 40 years old now. Sky does use it occasionally. Quite shaving when I retired. Now it's just touch up with a beard trimmer.
GB: When I got my first CPAP, they told me I would have to shave off the beard and mustach. I was stuburn, and wanted to try it first. Worked fine, no air leaks. Each time I go back they tell me I can not use a CPAP with my beard and mustach, that the mask won't seal. I have no problem what so ever. I am now on my seventh or eighth mask, and only one did not seal properly. I don't touch up or trim nothing.