What does all this mega pixel mumbo jumbo mean to me?
Basically mega pixels are tiny cubes of color that make up a picture. The more cubes your camera can use in a space, the clearer your picture will be. So the easy answer is that higher MP = better picture. However, depending on how big you want to print, after a certain size, it really doesn’t matter. In the chart below, ranking from best to lowest quality, it would be purple followed by dark blue, light blue, green, and then orange.
As you can see 10 mp is perfectly capable of being printed at 16”x24” and look great.
You can read more detail on the chart in this blog post.