It's hard to say, I am looking into other services at the moment. Blocktrades seems to be a reliable service to convert STEEM/SBD to bitcoins. From there, you could use services like Bitpay, TenX, and Wirex. To deposit into your bank account, you could still use Coinbase. There are a few others that work in the U.S like Kraken exchange that will deposit to your bank account. You will just have to try to find services that can do ACH bank transfers.

What sucks for me is that Coinbase does not provide their service in my state so I busy looking for other services that do.