Mule Deer, Norma brass is still out there for the moment, and is the easiest to find. Runs about $1.25 per piece, though. A few years go it was impossible to find any new brass. Anybody interested might want to search and buy some now if they're interested.

Bertram and Jamison brass isn't as good as the Norma, though they are cheaper. Jamison kind of sucks by all accounts, actually.. probably best to avoid that.