DoC is a really solid resource for the best bank bonuses currently out there:
http://www.doctorofcredit.com/best-bank-account-bonuses/
It does not list Discover, but Discover has one periodically and it has been a little while since the last one. The most crucial thing to bear i n mind is that (with Discover) the bonus can only be obtained the first time you open an account. Thus there is an advantage with them to wait until they have a really good bonus.
The promotions at many other banks are churnable, however, meaning you can open an account, get the bonus, close it six months later, then do it all over again.
The $350 HSBC bonus was really sweet, but you just missed it by a day. DoC has not yet updated their page yet about that.
Be sure to look at the business checking and state specific bonuses to see if those would work for you.
