Only go with Nikon - I know how much it hurts, I have four EN-EL14's.
Besides capacity and reliability problems with third party batteries. Despite wherever the battery is stamped per US labeling laws, all Nikon Li-Ion cells are currently made in Japan by a known supplier, and assembled elsewhere.
The real problem, however, comes with compatibility: any older third party battery won't work with the D5200, for instance. As newer cameras come out, the third party makers must remake their batteries to work with the newer Nikon lockouts (which of course still accept all older Nikon batteries).
The good news is that the P7000, P7100, P7700, D3100, D3200, D5100 and D5200 (so far) take the EN-EL14, so it is one (along with the EN-EL15) that Nikon is standardizing on, allowing you to hold onto it and use it in later cameras you may buy.