Hi Karen, I don't know about the A20 other than its 2.1 mp. You will find this will give you acceptable files for the web but you might struggle with the quality of A4 prints. The website above has some good reviews it's worth a look. I have a Kodak d280 this has the same sort of spec you might want to look at that also. :O)

Those who do not want to imitate anything, produce nothing. Salvador Dali