Yes I do because my pressure is on the high side. It's an old one, FisherPaykel 432. I've tried several newer ones but always go back to this one. It has a very comfortable under mask beneath the silicone and the bottom comes under the chin which is great! It helps hold my mouth shut. I use Remzees liners and essential oils for a more pleasant experience.
Are you having any problems with your mask? Do you feel your pressure is working for you?