I use Capital One, since I've had that account while it was still ING Direct. I like that I can have 25 different savings accounts, renamed to whatever I want (car tires savings account, PS4 savings account, etc). The .75% interest is nice, and they have one of the highest CD rates at 2.25% for 60 months with a low or no minimum.
I was looking at Synchrony earlier. They have a 1.05% savings account.