I'll be buying an MRC Superbrain 960 when I buy another charger. Stuck with the wall charger that came with my Losi right now, which is fine, the little ****er runs forever on a charge. Had a Duratrax TwinPulse before, great because you can charge two packs but it's not very adjustable (you can drop one side to 1.5amps from 3.5, the other is fixed at 3.5).