What my wife says about it - a miracle product. Unbelievable how effective it has been with substantially reducing and or eliminating my snoring entirely. Most times when she is woken up due to my snoring now is because my head slid off the pillow during the night.
What I say - she loves it, so I love it. Honestly, I still almost wonder if it is even working because it doesn't bother me during the night. I sleep right through the entire process now (it woke me up maybe three or four times in the beginning). So the only way I have to know it is working is by my wife's testament and she can't say enough good about it. But it is very non-intrusive and for that, I love it!
Bottom Line: Yes, I would recommend this to a friend