Ber is better without a doubt. Well I suppose it all depends on what char type you are. But you say sorc so now it depends on your resists. Do you need the +20 resists havok gives? Other than that the 10% Life / mana is only so much compared to damage reduced you could have got. (i.e. 100 life doesnt go far in dueling). Ber would be smart choice

By the way this is my 1st post @ Zelaron/Diablo Forum. Hope to stay for a while.