I just baught a Canon PowerShot A85. Its a 4.0 magapixel camera with a descent amount of features 3X zoom. While at the store, I also saw the Canon PowerShot S1. It has a 10x zoom and has some cool features, but its only a 3.2 magapixel resolution camera. Both are going for the same price. I still have a few days to exchange the A85 if I want. What do you think that I should do?