I have a converted server power supply that the specs are, 12V-75Amp-900 watts. Would you guys recommend one of the icharger duo's or the Powerlab setups or something entirely else, I guess I'm asking what would work best with the power supply I have? I'm a little lost with all the high amp chargers these days and trying to read up on them but figured I would get some opinions. I charge medium to large capacity 2s lipo's and some 4s packs from 4-6000mah, all SMC packs. Thanks for any input to help me decide what will work best for me.