At first I didn't like the added weight and it felt odd but only because it was different, I got used to it very quickly. I like how I can get a better grip on my camera, especially when I have a larger/heavier lens on it. It's like having added insurance from dropping it accidentally. So far, if I forgot to charge the batteries after a shoot one day I've had enough power to do another shoot the next day without issue. I personally don't use the AA option, I simply bought two more Li-ion batteries and carry one extra around as backup. You simply pull one dead battery out and pop the good one in and it's quick, it works fine. Granted, AA's may be a little cheaper but I like the power/life of the Li-ion battery well enough and two of them are lighter than six AA's. As with most things, it's a personal choice for various reasons so neither battery is right or wrong. The choice of using a battery pack is relative as well.