SPAXX vs. FDIC: Risk Comparison & Analysis

Someone asks:

Which one is best under the Roth IRA with Fidelity. SPAXX (Fidelity Government Money Market Fund) or FDIC (Insured Deposit Sweep Program)?

What’s the Difference Between SPAXX and FDIC?
SPAXX and FDIC are money market funds…

FNILX vs. VOO: Which Fund is Better?

Someone asks:

Hi all, has anyone compared FNILX (Fidelity) vs VOO (Vanguard) and found a reason not to purchase FNILX? Both follow S&P 500 but FNILX is newer and has zero expense ratio.
I’d have to start a Fidelity account to purchase…