I'd highly recommend the Etronix range of chargers.
I've used my one a few meetings now and it's simple, easy and quite compact.
I've got the AC/DC version, so it's quite versitile too when it comes to power source. Also includes all the leads you'd ever need and a good balance connector board (upto 6S)
Etronix also do a good range of accessories including a stand-alone balancer (Battery Doctor) and power distribution block (power Block Station)
Available from pretty much any good hobby shop with an account with CML.
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