The Riffe Frameless Mask is a personal favorite of mine. It can be found for purchase at about $50. The glass comes in either clear of amber. I have found that it makes a really nice seal on my face even with facial hair. My one concern however is the latching of the strap to the mask. Occasionally if I am adjusting my snorkel vigorously then the tab will come off. It is easy to put back in, but can sometimes be a pain.