Hey, fellow USAA customers. For the past several years, I would comparison shop about once a year for both prop and auto insurance. USAA was not always the lowest, but the diff was minimal and not worth switching since I love their quality of customer service.
But, this past year's increase in the prop insurance got me to be a little more aggressive in my search. I ended up switching both to Allstate (so would get multiple policy discount as with USAA). The auto was very close, but Allstate slightly less. Make sure you give them good miles per year if it is low. But, the prop was a good deal lower. I feel that the desire to protect their reputation causes USAA to recommend over-insuring. We bought at 385 last year and they recommended something like 410 (I know it is my choice, but......). With Allstate, I lowered my coverage to not included land, but even if I had gone to the same with USAA, Allstate would have been lower. USAA called to see why I cancelled and we went over the numbers. Allstate was savvy enough to point out something I've always known - why have medical coverage for auto if you already have healthcare coverage? They seemed more straightforward with keeping your costs down.
Prior to the housing bubble, when people were not as savvy and aggressive in obtaining loans, USAA was not that competitive for mortgage rates. Since then (I spoke to them about this) they upped their systems and are now pretty competitive. A broker can always find you a better rate, but they compete fine with Wells Fargo, etc.
But, you are right with investments, brokerage, interest rates. Their best features are the discounts they can get. Mover's Advantage for buying/selling a home (a kickback from commission), car buying service, etc.