Get Hasten near to perma. Then slot for defense, you should be able to get about 20% to all positions or about 30% to one.
Recharge is more important because it hugely increases your damage output, as well as the frequency of key /ElA powers - Power Sink and Energize. You can't get near the softcap anyway, so trading recharge for max defense possible is a waste.
Should SS/Elec brutes go for +recharge or + Def