High income earner in a state with no income or capital gains tax. Should I invest in a traditional 401k or Roth 401k?

I plan to live and retire where I am at in about 25-30 years. I’ve maxed out other job related investments/benefits and job does not offer after-tax 401k contributions. I have a 529s for the kids and a brokerage account with growth ETFs and stocks but looking for other investments suggestions as well. Thank you.