I have a Winx unit which mostly works. For me, it's a much more agreeable solution than a CPAP. A little more cumbersome than a MAD, but overall a more comfortable approach.
Unfortunately, I won't be able to source the mouthpiece anymore as the company is now bust. In retrospect, I should have stocked up because it's the mouthpiece that is the really unique aspect of the Winx. The suction created by the central unit is, when you really get down to it, the result of a calibrated vacuum pump.
It's too bad that the "it's only good enough for some" has made the product stall in the market. Now, this device is no more.
Should it get revived, I certainly would recommend it for others to evaluate.
Bottom Line: Yes, I would recommend this to a friend