Most of my dies are RCBS, including a couple of special order ones that I got from them -- .30 Gibbs, and .44 mag FL shotshell, but I also have dies from Hornady, Pacific, Lee, and my first dies that I bought from Herters.

Lee makes some specality dies like Universal decapper, and Universal expanding that often come in handy.

If you will be loading any straight wall cases (like most pistols) I would strongly reccommend a carbide sizing die. No need to lube the cases.