If EmigrantDirect wants to be known as the bank with America's highest rate, it's going to have to do what it did back in September and make at least a 0.50% increase. It should be pointed out, however, that EmigrantDirect doesn't have any minimum deposit requirements. However, GMAC Bank's money market account's required minimum isn't bad. It only requires a $500 balance to get the full rate and to avoid a $7.50 montly service charge.
GMAC Bank also has many other perks that EmigrantDirect lacks such as check writing and ATM cards. GMAC will also refund up to 4 non-GMAC Bank ATM charges per month. Some other good points reported on this Fatwallet thread include quick account opening and an easy process of linking external accounts. The only thing GMAC Bank lacks is a signup bonus.