I would go with this mask, the west vest one.
http://www.umpirejoewest.com/umpiremasks.htm
or this mask the new titanium one,
http://www.honigs.com/detail.asp?Cat=2&Sub=36&Item=1064
both are super light and very comfortable.
The WV mask is the only one I have used since 1997, and this year I will wear the Titanium one with my new WV Gold and they both feel great on. BTW, I used the same WV mask from the fall spring of 97 until this year. Needless to say it was very durable.