I rarely used them in Unite least for Dual Sword just because it proc'd like once a battle which was a waste when I could add way more elemental damage.
Pellet is epic SOMETIMES, it seems a little more accurate in this game though which is nice - but that thing is a freaking death machine on diablos tail least it was in Unite. Dual Monoblos/Diablos takes less than 5mins with just a stack of Pellet Lv.3 and Pellet Lv.2 in Unite. <3