Get the orion/peak. They are great i use the crap out of mine for over 4 months and no balancing. Great packs, i have no need for more battery performance. I use 2 4800's to run 2 clasess (3 quali's and 6 min main) sometimes i use 2 battery's to run 3 classes.

they pay for them selves in the long run. Nimh go to shizz after using them alot.