The Sanyo MQN06 will work with other brand cells too, but maybe not "as good". Sanyo has done a great job matching their cells to their chargers (i.e. getting proper termination at low Charge Rates). Read about their latest design in this thread started by member
PeAK for more details:
Some details on Sanyo's "Peak-cut control" termination scheme
Agree. Charging in SERIES isn't the best. I've assembled a thread of popular 'Smart' Independent Channel Chargers:
TTA's NiMH/NiCD Battery Charger Specifications Thread
You can also CLICK on my Sig Line LINK where you'll find LINKs to many other Rechargeable Battery Topics, such as:
An informal look at the Sanyo NC-MQN06U – charging in pairs for example.
Finally, there have been MANY threads asking for charger recommendations over the past couple of weeks. Just SEARCH or visually scan the Index Pages for them. You see the same recommendations come up over-and-over.
This type of charger might be too great a leap from a Sanyo MQN06 for the OP.