Taking baby/family photos.

Hello, 

I need some advice. I am deciding between the two cameras. The frst one is Sony NEX 5 and the second being Sony NEX 5n

I found the NEX 5 for $480 and NEX 5N for $600

The price matters to me. I am upgrading from a point and shoot. Not sure if there is a huge difference in the cameras, that warrants the $100 price gap. The salesman in the store says that it is only the touch screen but it must be more than that. 

For me, having great video and photo (Especially in LOW LIGHT conditions), to take baby pictures, with some degree of control is all I need. Battery life and fast focus is next in line on "wants"

Thanks, any advice would be appreciated.

Steve