PurpleTail, since you are new and your income is probably not too high (unless your spouse is highly paid), I really recommend you put as much as you possibly can into the Roth 401K. If you are not highly taxed now, you are not losing out on much of the tax break from a regular 401K, and that Roth will keep growing for decades, tax free. The very best candidates for a Roth 401K are younger people who are not paying much in taxes. You might feel like you're paying a lot, but wait till you get into the 39.6% tax bracket!
Totally agree with Knightflyer's post, Roth 401K's are not income limited. It's a great deal for many.