RE: Deciding between chargers, Input wanted
The thing to watch with using a charging board is that the batteries have to be the same and at the same level of discharge. You have to add all the batteries to it at the same time (so you cannot use one, put it on to charge, use another then put it on to charge etc).
I confess to not looking at your chargers but the real difference is more than likely going to be their max wattage and amps (watts= volts x amps). The thing to look out for on this one is that you must stay within the amps AND watts limits of the charger.
The chargers may also require a seperate power supply.
All the best