The Sphera is probably the most popular mask for underwater hockey in New Zealand and normally retail for $120. With is wrap around design it is probably the lowest volume, most face hugging mask you can buy. Because of the curved lenses, the Sphera has amazing peripheral vision so you can see the bad guys coming! The large soft skirt makes this mask very comfortable and leak resistant.
If you like the Sphera but want flat lenses, have a look at the Seal