Hi Tony, thanks a lot for the review! It's been very helpful.
To say that the vision is better than the Sphera is quite something. I never thought the vision in any other mask could be better than the Sphera, but I guess I was wrong.
Yes, I too did notice the ridge on top of the mask when I saw it, and the first thing I thought about was hydrodynamics. It does seem to create a lot of drag, and seeing that the Raven sits out more (due to a larger volume) than the Sphera, I would think that it must have created a ton more drag.
Thanks for the review again!
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