I max out my 403(b) now. Even before maxing it out, I benefitted significantly from the tax savings.
Thanks to a friendly member on here, I found out I am also eligible for a 457(b). That thing is magical, and had I known it existed, I probably would have maxed that out first. It would be worthwhile to find out if you're eligible -- that's another $18,000 you can save, tax advantaged, if you are. Add in an IRA, and you've got quite the tax-advantaged stash potential.