This review is more towards the Vitera, but the nearly identical Simplus can be considered in this review as well. There are differences between the two, mostly slight shape changes on the cushion, a hose insert on the Simplus that's not on the Vitera, and the Vitera has webbed back of head strap cushion, and the straps are blueish on the Vitera. Differences considered as minimal in performance.
I received the Fisher & Paykel Vitera Large mask, single cushion and frame, yesterday along with a Medium cushion for this frame. I used it last night, and although it looks bulky and that it would interfere with the forehead and sight lines with that hard plastic bar, I found it added to stability without adding the negatives I'd thought.
I've only used it one night so far, but I did an overnight lab test early this year with this model. I find the mask feature called RollFit to be more than hype, as it seals very well with minimal strap tension. It even endures side sleep sessions with no leaks or movement. I feel the added adjustment on top to help orient the mask up or down your face as you see fit.
This Vitera is very much like the somewhat older version called Simplus. I give the Simplus the nod at the top strap adjustment range, but realistically, these are so close to being the same, I'd rate these identically.
I cannot think of any negatives.
Do note these F&Ps vent through holes in the front above the elbow. These vents are built-in on the cushion itself. The Vitera elbow has a clear insert, but the Simplus has a brownish insert on the elbow that may stick in the hose.
Either one of the Simplus or Vitera are excellent choices in a full face mask, and I'd recommend either to the full face user. Both these F&P masks are notably more comfortable than my F20, and these replace said F20 as my go-to masks. Leaks are far easier to control compared to F20 in either AirFit silicone or AirTouch memory foam.
Positional Apnea
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.