I've been using a nasal pillow CPAP mask for a few years now.
For the most part, the nasal pillow mask had worked well, except for
1. It irritates the skin inside my nostrils. I've been able to mitigate that by putting moisturizing cream on the pillows every night. If that was my pocket problem, I probably wouldn't have tried this new mask
2. I occasionally get a pimple right inside one of my nostrils. That makers the regular nasal pillow mask painful enough that I won't use my CPAP for a few days
Things to know
1. The pack contains everything you need to get started including three different sizes of pillows and a sizing card to help you pick the right one. Note, your size may change from what you're using now -- mine did, so don't skip this step
2. The connector between the pillows and the mask is different, so if you want to switch back and forth, you need 2 masks, not just 2 sets of pillow. The hose and the humidx's are common, though
I haven't noticed any degradation in my sleep quality, but I haven't checked my numbers yet.
If you have any problems with nostril pillows similar to mine, I think this is definitely worth trying