LenC
Registered
I've had one for a couple of years and found it very comfortable. The only problem arose during an OOA emergency when I offered my primary to a very distressed diver (or rather didn't prevent him from taking it). He couldn't get it in his mouth and that didn't help the situation. Now I only use that mouthpiece if I am diving on my own. But if you are looking for something with almost zero jaw stress, you will be happy with it.