Best course of action for taxable account and Roth IRA at Fidelity

At Fidelity: VOO or FXAIX in taxable account? VTI, FSKAX, or FZROX in Roth IRA? I want to have the ability to transfer brokerages at a later time if needed. I want to track the S&P in my taxable account and Total U.S. Stock Market in my Roth IRA. What would be the best course of action?