It arrived very quickly and I was excited to try it out. And Direct Home Medical had a really good price on it, Thank you DHM! It is a comfortable mask as far as fit, no major pressure applied to face. If you have a problem with the mask leaking on the forehead, you can use a sweatband sold in sporting goods to add just enough pressure to keep it from leaking. The reason I couldn't give it 5 stars is that is stays a little warmer in the mask than I like. But, I also don't use the humidifier for the same reason. So, If your comfortable with the heat from the humidifier, then the mask shouldn't bother you. But if you have a problem with feeling a little to warm in a FFM, then you will have a hard time with this mask.
I am also a side sleeper, and haven't had a lot of leaks while sleeping on my side. At least no more than any other full face mask. I usually lay my head on the edge of the pillow and let the mask hang over the edge. If I can ever get used to the warmth of the mask, this is the mask that I will use as long as I have OSA. I believe this would be one of the best rated mask on the market, if they could find a way to keep it a little cooler inside the mask! Maybe instead of venting right beside the intake, they could spread the vent holes around the perimeter of the mask to help move the air inside the mask a little better. Reviewed by: Wayne, Clarksville, Tn.