Which Sony Camera is the best from this 6?

In order from lowest to highest price

Cyber-shot Digital Camera WX150

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666424853

Cyber-shot Digital Camera TX20

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666427923

Cyber-shot Digital Camera TX66

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666416927

Cyber-shot Digital Camera HX10

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666424845

Cyber-shot Digital Camera HX20

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666429155

Cyber-shot Digital Camera HX30

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666429167

I'm not sure which one is the best purchase. I'm looking for good zoom. Great picture quality and high quality videos. Also, the camera must do well in low-light conditions.