I love my SX160IS for a back up camera, but am now needing to buy new batteries again. The Canon branded NB-300 batteries so far have been the only AA batteries that deliver more than a dozen or so shots. They are not cheap, and they are getting more difficult to find. Plus there are so many off brand batteries out there but so far any battery that I buy lasts no longer than regular alkalines. Has anyone found a good substitute? are eneloops good?