The D5200 has more resolution and a newer sensor. It also has a penta-mirror finder, no sub-command dial (finger wheel), and doesn't have dedicated buttons to quickly change settings without going in to the menu.
The D7000 has a penta-prism finder (that is much brighter than the penta-mirror finder), both Command and Sub-Command dials ( just like the D300 and D700), and dedicated buttons to quickly change settings without going into the camera menu. It also has an AF motor built into the camera body that supports the screwdriver type AF lenses. Good Luck and Enjoy your Nikons!