I also have slotted nares and the pillows work just fine. In fact, the Breeze pillows are oval shaped, perfect for slotted nares.I have slotted nares and the nasal pillows don't work that well for me.
Rested gal is correct about the nasal pillows for the Breeze. The green are softer and work so much better than the clear. I never needed the extras strap, mine works fine as is. Most people love the Aura/Headrest, but I personally breathe so much better with the Breeze that it is my current main mask. I have the Aura, but I rarely use it because I just don't feel alert and sometimes get headaches after using it. Everyone is different and I am sure I am a rare exception to the rule.