Since I started working full-time seven years ago I've taken every opportunity to save money pre-tax. Some people use the Roth IRAs, but I think that's foolish. Why? Because I think the world is moving away from income taxes and towards consumption taxes. If my plan works out, I can save the money pre-tax now, and then never pay income tax on it at all! I'll still have to pay whatever consumption tax exists when I retire, but so will everyone else! I'm a genius!
Here's a page with some information on choosing a Roth or traditional IRA. Did you know that the "A" in "IRA" doesn't stand for "account", but for "arrangement"?