About EF brakes i can comment on the following,
For me a slight spongy feel is actually pretty good, much much better than the EB we had that felt very very wooden as though the pedal was dead like as if it had a lack of power assistance.
My brake rotors are on th wear limit and i've got Bendix Standard on them. For daily use there ok pads, very little noise, doesn't chew rotors and disc brake dirt virtually nonexistent.
In hard constant braking at low speed(ie, going down Old Bathurst Rd to EmuPlains at the foot of the mountians) i do feel they fade.
But braking hard from high speed i feel there quite ok. Except when braking from 140km/h in a back street after a drag and stopping in time for an intersection, brakes were on the limit then.