I really like the iCharger 1010B+. Check the link provided. It gives you the individual cell voltages, internal resistance per cell, you have the storage function etc. etc. If you have a good voltmeter you can check the calibration. Nice thing is also they are very active in upgrading the software. You can download it and upgrade via the USB port on the charger.

If you are not familiar with Hobbycity, be sure to create an account and log in before you select the charger. When I ordered my second one it made a 20$ difference.

Volkert