I don't use them too often anyway because they reduce the amount of EP you get from EG. I will use them every now and again on SEG, becasue when I 1st run into them for some dumb reason they are like LV 40 with a bigllion HP and can't be killed even with super strong friends, after i run into those about 5 times i start to get level 5-20 ones. which can be killed with friends.