Depends on what part. The pit I favor the radiance ability and sticky grenades.... however if you have a bad juju-obsidion mind combo it's SUPER FOR DAYS. At crota, if I'm not on Zelda sword duty, I'll void walker (cause revives are available in nm) and nova bomb thralls for orbs and give my sword guy a chance to get his super en route to crota. Case by case basis my friend.... figure out what your team needs you to do and go from there.