If you want cheap chargers with a built in balance harness, then visit hobbycity- I would advise against $30 weird chargers that magically auto-detect the the capacity- thats too cheap to be a safe bet in my eyes.
I would say take your pick from the ones on these pages:
http://www.hobbycity.com/hobbycity/s...6&ParentCat=85
Most will require a seperate power supply though- the hyperion 50watt jobby has a built in powersupply and balancing feature for a modest $130-150, though charge current is reduced when you use larger voltage/mah packs.