I'm looking to purchase a new camera and want to be able to take action/sports shots of my kids (HS Soccer), indoor shots around our home, outdoors, vacations, etc...

I love the smaller cameras, but think I may need more zoom than they offer. I'm pretty sold on Canons since that's what I've had in the past...

1. Would I be happy with a 4x optical zoom with 6 megapixels? Thinking I could crop my pictures & still have great shots....????? (Canon SD700is)

2. Would a 6x optical zoom (about 6 megapix) do a better job? (Canon A700)

3. OR do I need to go up to a 12x optical zoom (6.2 megapix)? (Canon S3 IS)

Any opinions or suggestions would be appreciated. Thanks so much!
Denise