i brought the Hyperion EOS0615i duo3
and i am loving it, it has two outputs, and can charge with 15 amps each..
it has balancer and everything you need and can also discharge at 10 amps, thats nice, because lipo's are best stored at around 60% capacity.. (has programs for that too ofc)
you can have realy complicated stats on you laptop via USB..
only downside is that it does require you to have a powersupply with you. but i think its worth it..
it can also be programmed to take care of "long leads" to your batteri so the resistance gets higher and it "false" peeks, not charging to full 4.2 volt per cell.. and you can firmware update it..
btw did i say its 2 x 15 amps charge..