Jim Bob...do both! The before tax withdrawal is there to help your retirement grow faster...may as well have that "tax" money working for you for a few years! I'm a fortunate one that being that I live in Texas and there is no state tax here! As for you SLOP, if you haven't heard back from corp yet, here ya go: company matches 30 cents per dollar up to 6% of your check. You can invest up to $15,500 (check this figure) tax deferred of your annual income per the IRS. If you're good with math, you can sit down and figured out where the breakeven point is. It's not the best match out there by far, but always remember...They don't HAVE to match anything.