Have not seen much discussion about GMAC bank, but I have had nothing but great experiences with them so far. I have had money in GMAC for about a month now and I think they have the best user interface for online savings yet IMO. Very easy to open, they do a soft pull, Customer service is great, easy to add external links (huge plus for me), easy to push and pull, checks and a check card, and the yield is over %5. Just throwing my experience with them so far.