Mandalorian rockets are great. Weapons with high ROF or damage do wonders (Pistol 3, T21, SBD FP3, DLT20a). Out of force powers I'd say Pull 3, Grip 2+ and Lightning 2+.
This is closer to 50 or 60 these days.
Assuming the focus here is to counter as a Sith... If a Hero uses Dash, he is...