After accumulating over 1600 photos, I finally set a workflow that goes: shoot, come home, import card into LR, give the deserving candidates 4 or 5 stars; the rest are deleted. Card goes back into the camera and is formatted. No regrets, and I usually am lucky to get 3 or 4 printable candidates out of as many as 200 shots. Ya just gotta be brutal, and no looking back. Were I shooting stock or for clients, it would be a different story.