Also check out HSBC,
http://www.hsbcdirect.com/1/2/1/offer?code=husa.
I think that ING offer similar rates (around 5%) for an online savings account. No minimum balance, but you need to be on top of their account management policies. If you forget your password it can take a long conversation with a CSR in India and up to a week to receive new credentials in the mail.
You may find something similar with ING and it is hard to really know how this works until you actually have an account. The security is for your safety, but it can be tedious.