The lower priced engines (Bman, Athearn BB) may actually run better with the 2400, especially with the pulse switch "ON".
For consists, the 2400 definitely has more power but both are fine packs.
Jim
I got done connecting and wiring my cab B pack today i am running 2 MRC Packs the tech 2 1400 and the Tech 2 2400 i plan to use the tech 2 2400 for my atlas and intermountain locos the 1400 i am going to use for my bachmann and athearn locos for mixed consists i will use the Locomotion 2400 for single units i will use my Railpower 1400 anythoughts on my Cab A & B packs i think this will fit the bill any thoughts?