Casio Digital Cameras help?

The first camera and third have the same mega pixels, they both have movie mode, but the 1st one has a larger screen and also has a better zoom, and costs less, so between those two I'd go with the first option. The third however has you tube direct upload so if that's something that's a deal breaker for you, you might want that one. The fourth option has better mega pixels and zoom. Second doesn't have a rechargeable battery so I wouldn't waste the money, hope that helps.