I have two Turnigy chargers with a balancer built in. They were about $45 -$50 each with shipping.
Turnigy Accucel-6
I have the same charger and have had no fault with it. I charge 3cell 2200mAh, and 6cell 5000mAh with it, only fault is it runs of 12V not house supply.. 1C is the max I would use.
Cheers