I have the clear Atomics Aquatics Frameless mask, and don't have any problems at all with fogging. I used white paste-type toothpaste (no gel) and a soft toothbrush on the mask lens, inside and out, three (3) times before I used the mask. I let the toothpaste dry a little so it would have more friction on the glass.
After the toothpaste treatment, I soaked the mask in warm water with Dawn dish detergent for a couple of hours, rinsed, and then repeated the detergent process. This procedure is what I follow for all masks that I buy. When everything else fails, I have in the past used SoftScrub cleaner, toothpaste, and then detergent, but you have to make sure to rinse the SoftScrub chemicals out of the mask thoroughly, and the chlorine in the SoftScrub can't be good for silicone, so that is not my first choice and I'm not recommending it because it's probably overkill.
As a side note, I recently learned NOT to use the mask rinse bucket on cattle boats because the last time I did in the Caymans, my well-used and reliable mask that never fogs fogged up and remained that way until I could re-clean it. Apparently there are many different types of chemicals that collect in these buckets over time, and dirty water, sunscreen, and other chemicals can coat mask lenses. I also pay attention not to breathe out of my nose.
Hope this helps, and enjoy that new expensive mask that is probably well worth the price in my opinion. I know my frameless is worth it!