FDIC insured or not, you are still making an investment.
Does it make sense to invest with
Countrywide (or some of the others) given their current (or market) problems? Is that extra 10th worth it?
Even though BoA put up billions, is it any less risky?
I ask this not to say its wrong, but mainly because I have had, & continue to have $$ with them

.
If they go under, how long will it take before the FDIC pays out? Here in MD, I remember when the Savings & Loans all went to pot, & the length of time it took before anyone was able to get their money back (not FDIC, but State insured).
If your $20K happened to be in one of the S&L's & you needed it to purchase a house, guess what ...
"When the Maryland, US state savings and loan system collapsed in 1985, the underfunded insurance system took more than a year to refund deposits to account-holders at the institutions that failed."
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en.wikipedia.org/wiki/Bank_run