for weavers, i tend to use DA (elemental sword) and BTB (piercing sword) - is the knockback for DA better than BTB ? other than weapons, i guess the other thing to watch for is timing. just after they have squeezed the life out of u, is probably the best time to counter-attack, and slice them up.
for devilites, i initially tried to use argent, then realize magnus does significantly more dmg. in a grp, i would have used blitz. but as a solo player, i find it dangerous to use blitz with tier 3 devilites. so it seems my strategy would be BTB and magnus (until it becomes callahan).
hope to hear the different strategy that folks use ...
Greavers:
I shield and let them come to me, and then I quickly attack with my FF and shield cancel, keeping my shield up. Rinse and repeat.
Devilites:
I just clean them up with my DBB. :) Doesn't matter if they start dancing, they still get hit. You just need to know how to dodge them.