Of the many skills and abilities that I need to work on to improve my photography, becoming more efficient is my priority, if only to free-up time for improving the other skills. When I got seriously obsessed with photography, about five years ago, I was an awful one keeper for every hundred or so photos taken. Now I'm down to one for every ten or fifteen. My goal is one for every three. I can't imagine shooting all keepers. But it would save immense amount of hard drive and time. What do you think is a reasonable goal?