Hi a peak charger detects when your battery reaches it's hieghest voltage when charging and as soon as the voltage starts dropping lower during charger the charger shuts off and your battery is done... Pulse charg is when the battery is charging the curent is pulsed on and off very rapidly during charge...this methde is said to be good for nicads.... All hobby grade chargers can be rapid /quick chargers because you can set them to charge fast or slow by setting the amprage....
I would go for a MRC superbrain 969 very easy to use and has all the good features needed to charge most any type of NICAD or NIMH battery.