Most likely SGT 7.7
CMIIW, Battery technology seems to have a hard time keeping up with the phone processors, so the next logical option is to get a bigger device which will allow more room for battery..

Sure you will lose a bit of portability, but it's worth it IMO

I'm not sure how quad core phones will manage the battery life,
Wouldn't it be like N900 where power and battery consumption is not properly balanced?