I realize this thread is about 2 years old, but I just ran across it.
I use albumen from Eggology which I am able to buy in my local alternative food stores. SOme of the regular super markets also carry it.

Its superiority stems from the fact that it is kosher - absolutely nothing added to the chickens or the eggs.

The albumen is just like that from free range chickens and I am able to get fair gloss with a single coating.

Jim