Try and pick an allocation first:
- Product: equity/bonds
- Style: Stocks (Intl, US, large/mid/small cap, industries, etc), bonds (high yield, corporate, municipal, etc), and the like
Given your age, you should be very heavily weighted toward equities like >90% minimum.
Once you decide on allocation, then choose the right funds to hit that allocation.
If you can lower your expenses while still hitting your allocation, then you'll be fine.
You want your blended expense ratio to be <0.50% (as a general target, going a bit higher won't kill you). Certain funds will just cost more, like international funds generally have more expenses than US funds. Mid/small cap will usually be higher than large cap, and so on.
To summarize, first prioritize allocation, then find the cheapest way to do it. In an ideal world, you would hit the $17.5k 401k limit and $5.5k Roth limit. I don't know your salary, but assuming it's <$60k, I would prioritize contributions like this:
1) 5% minimum to 401k (to get match)
2) Maximize $5.5k in Roth - You will lose eligibility within the next decade as your salary grows above the IRS phase out limits
3) Increase your 401k contribution until you max the $17.5k limit
4) Start to invest excess funds in a taxable account (this may take a while as $23k is already quite a large chunk in #1-#3)
Overall, you have decent options in your 401k, as Vanguard, Dodge & Cox are two big players in the fund space.
At this stage of your career, and likely with a very low investment balance, it's more important how much you invest than what you invest in. If you aren't very well-versed in the investment space, just pick the Target Ret funds in both 401k and Roth, and you can rebalance once you get a better idea of how risky/safe you want to be, what you want to be exposed to, and if you want to take advantage of different economic conditions as they arise.
For what it's worth, I started full time work around 2.5 years ago, and wish I would have invested every spare dollar I had, as the markets have returned an insane amount since 2012. The key is to stay invested and keep investing no matter what... especially early in your working career.