Share your experience!
as far as i have read and experienced,
8mp shots are good because of the tech called Pixel Bining, wherein, it will use the whole 23mp sensor to create a 8mp images, it is most useful when you have a specific subjects to shoot at, like an inamimate objects or particularly on low light situations,.
23mp images are best when shooting landscape, wide angle images, or images that are best looked at when zoomed out.