Those looking for a bank account with Direct Connect may want to consider Citibank's new e-Savings account, which pays 4.50% APY, and linked EZ Checking account, which doesn't pay interest.
I don't have one, and am not comtemplating opening one, but it looks like the "buy-in" is only $1,500, combined between the two accounts, to avoid fees. A little lower than the $2,500 or $5,000 usually required at brokerage accounts with checking privileges.
Caveat, I would double-check that Direct Connect *IS* available for both types of accounts before jumping in.
Bob