R3 is my personal favorite. It's super easy on the gums, in fact it doesn't even touch them so you don't have to worry abut irritation. This makes it very easy to wear it daily.
It's suitable for clenchers and mouthbreathers and comes in many sizes so it's easy to find the right size and later to size up. It's the most comfortable version I've tried and it lasts for up to one year.
From my experience and the feedback from my clients, it can help improve facial and body symmetry, expand the face and bring it forward as well as assist in healing the TMJ.
This version is suitable for beginners as well as those who want to speed up their results.
