Well, if you are willing to spend then you can consider the 35-40$ Maha powerex MH-C9000, with a very nice display and for many a gold standard of NiHM chargers. And if you are in for the ferrari, have a look at this cool skyRC (about 60:money_mouth_face: with a supercool phone app to monitor the charge by bluetooth where you can almost see the electrons pumping into the battery :bigsmile:
Above you said that you decided for a nitecore D4, that is a good charger for Li-ion that can charge HIHM but not a dedicated NIHM.