I would consider the D7100 or 7200, I just upgraded to the d7100 for stills. If you do a lot of action shots the d7200 is a better choice due to having a larger buffer.
However if you like the small size of the d60, consider the d3300. This is a great little camera with tons of easy to use features and the photo quality is great. It is also inexpensive compared to the d7100/d7200.
