The much more charger seems good...But we in asia have this charger around for about a year already,and according to my LHS,there are a couple fo people bringing the charger back.Cause it burn out for no reason.Maybe its a batch problem.
But I think most top of the line chargers are good enough to charge batteries.Others like Orion's Advantage,Futaba's CDR 5000,Competition Electronics' GFX turbocharger,Protrak....Many more...