Fitlife mask?

I have been searching for a mask and the Fitlife looks like a possibility. I've exhausted all the masks covered by our provincial plan and am still going stir crazy with mask leaks, neck pain, and deep marks on my face. In spite of all that I feel a lot better than I did before I as diagnosed, so am determined to find something. I expect I will have to pay out of pocket as this mask was not one of the ones my provider had. I am a side sleeper, I've tried and cannot stay on my back more than an hour, it causes other issues which help keep my chiropractor in business. So I am wondering how well users make out sleeping on their side with this particular mask?