Similar to NavyHoops, I have both USAA and NFCU, with bank accounts at both. With more products at USAA, I do the majority of my banking there, using the phone app for most transactions. Pay bills, shift money into investment accounts (internal and external), etc. I go into the local NFCU branch maybe a few times a year - to get cash in specific denominations for holiday tips to various service professionals we use, umm, guess that was it for 2017. But I like having a brick-and-mortar just in case. I use any ATM I come across as needed while traveling, because USAA reimburses all monthly ATM fees up to a certain amount, which I have never come close to exceeding - thus, no ATM fees. I have to do a bit more checking to find NFCU in-network ATMs. There are always plenty of NFCU ATMs near military bases.
Both have competitive cashback and points reward credit cards. Both are deployment-friendly and understand OCONUS challenges.
NFCU has caught up to USAA’s mobile platforms. NFCU gave me my first credit card without batting an eye; this was in the days when some banks and stores still required a father, husband or adult brother to co-sign for any woman who wanted a credit card or loan, regardless of her earned income. As a nod of loyalty, I have maintained accounts there.
NFCU, as a dot-org credit union, is almost always going to have better consumer loan rates for auto and property loans, because lending money at low rates to its members is the core mission of a CU. The USAA Bank is a dot-com, and is saddled with more costs to lend than a CU. I have gotten all auto loans at NFCU.
Mortgages - though I always checked with both, I always found better rates elsewhere. The last two mortgages and refi’s, we have used a USNA ‘76 grad and retired officer who is well regarded in the Annapolis area as an independent mortgage broker who’s an ace with VA loans and minimal fees. He’s word of mouth on the “grad circuit,” though you can find him in the back of SHIPMATE, along with a few other grads in the same business.
Both USAA and NFCU offer various retail discount programs, home buying/selling services with rebates on realtor commissions, etc.
A credit union can broadly set the terms of its membership and expanded eligibility. USAA is a chartered association with specifically designated eligibility groups.
Both have provided excellent support to me since the start of my military service. Everyone finds the right combination of what works for them.