A little help with demons...

[Jimmoth]

hey all,
im new to DE but not to warhammer. iv got a mate with 2 very vicious chaos armies. 1 warriors and the other demons. iv beaten the warriors 3 nill now (whoo) but i can tell hes getting frustrated. he has a demon army that i havnt beaten in a long time with either my orcs, vampires or lizzies. and im sure hes gonna bring it out soon. generally he fields some juganaughts, some blood letters, some demonettes, some horrors and i cant remember what else. plus either a bloodthirster or that double headed lord of change. im thinking of feilding some bolt throwers for the big guys but id like to here what you guys think. cheers