Image selection can be a very tricky thing. On a day when I go out on a typical photo shoot, I may come back with around 300 images to sort through. Out of this many images, I usually whittle it down to about 4 or 5 images. I do take a lot of similar images, where I use different cameras (Canon G3 and 300D) and different lens etc.
Digital photography can be a blessing and a curse. While it is great to be able to take a large number of images and cover all sorts of different angles and try different things, it makes sorting and selection a lot longer and harder than the days when I used film.