Do not use Coinbase! They have extremely poor service and will not support you if you ever encounter issues logging in. Instead, they will write a generic response to your ticket and immediately close it. If any major bank tried to pull this they would get buried in lawsuits.
Again, avoid this service at all costs. Forget their greedy 5% fees on deposits/withdrawals - it doesn't even matter if you can't get your BTC or USD back period. That's a 100% fee.
I have heard a lot about Coinbase support recently. It seems they have a good market share and they are not interested in traders. They are adding more altcoins instead of focusing on developing technology and services.
Recently there are a lot of problems with traders' accounts. we really should remind in using Coinbase.