is the mask of choice for my team. We use ithem (in conjunction with drysuits) primarily to protect our faces from the chemical and biological hazards we often face in search & recovery work.
We also use the Divelink U/W comm. systems that are affixed to the mask and they work great. We can converse diver-to-diver, and diver-to-surface. With the AGA's, you can speak quite clearly.
The downsides of the AGA's are that since its a positive pressure system, they use air faster than a conventional demand reg. Also, the AGA's tend to push air into your drysuit or wetsuit hood and baloon up your hood. I put several small holes at the top of my hoods and that seems to work.