I honestly can't ever see a need for the atm access (I will have the card of course, just in case...hence the term "emergency fund"), I have no doubt normally the situation will allow me time to transfer the funds to my checking account just as I would do with ING or any of the others.

for me it's about the convenience being available not to mention the better rate than ING. the interest difference between GMAC, HSBC, and ED is negligible when I factor in the extras I get from GMAC that give me ease.

everything is certainly subject to change though, who knows what will happen in a few months, GMAC could drop into the 3's, ING might finally catch up, possibly even surpass everyone, anything could happen. heck, getting to your money at GMAC could turn out to be a nightmare, maybe it takes 7 days to get funds moved over, you never know.