We had an Ally Bank account until last month. When I opened the account, the interest rate looked good. By the time the account actually got opened and our electronic deposit went into the account, the interest rate had dropped quite a bit. We had the account just a few months and the first month, the interest got credited at an appropriate time. The next two months, there were no interest credits at all. I called them. They said there was a glitch in the system and it would be credited would the problem was fixed. Some accounts were effected and some weren't. (That's the weird part.) It took 2-1/2 months before the interest was credited. As soon as it was, I transferred the money out and closed the account. I had to call twice in this process. I also had to call multiple times in the beginning because they had told me I could download our transactions to Quicken. I spoke to half a dozen people and none of them had a clue about this.
Anyway, Ally was/is owned by GMAC and once DH found out that, he wanted the money transferred out. I waited until our interest was credited first, though.
We liked Everbank for a short-term account we needed. The first three months earned a bonus interest rate and then the regular rate kicked in. Even the regular rate was comparable to other such accounts. Between Ally and Everbank, I'd open another Everbank account in a heartbeat.
We also really like our Capital One savings account through Costco. If you have a Costco membership, you get a bonus when you open and fund the account. (The amount is dependent on the current promotion and the type of membership you have.) Also, depending on your balance, you can earn an EXTRA quarterly bonus. You have to sign up through the Costco site links. It isn't advertised on Capital One's site, but they have other accounts that seemed reasonable if you do not have a Costco membership. The account was easy to set up and we haven't had any issues at all.
We also have ING Direct accounts. I really like ING for active accounts. The interface is super user-friendly and transfers are a breeze. Customer service is excellent so far.
I'm assuming from the way you quoted "high-interest" that you realize interest rates are low across-the-board.
All of the above are the highest I could find this year.