i think amd m2 are gonna be very nice
amd 64bit processor has a superior design even as it is - moving the memory controller from the northbridge to the processor was a big step - thats pretty much what made the starting 64bit lineup perform that much better than its competitive intel processor
adding ddr2 and increasing the stock speeds even more will be a good step up for those processors
all in all, sometimes amd is ahead, sometimes intel is ahead - its a big game of catching up that will never stop - although, i still prefer amd