@lblazina - I have used the ResMed Air Sense 10 for the last 8 years or so and have been very happy with it. I'm sure there are several really good C-paps out there as well. For me the most important piece of equipement will be the mask you end up selecting. The stats are high for those to give up on C-pap therapy and I believe it's more about the comfort of the mask than the actual machine. It took me more than 6-8 masks before I settled on one that I liked.
Although a full face mask would be better for me I could not handle that. I've used nasal masks for over 20 years now along with a chin strap to help keep me from breathing with my mouth while sleeping. Happy Zzzz's! Jim@thankful