I just wanted to emphasize this. A R50 of the right class (GLA, PUG, MRD) can solo any of the ones I've seen so far. But it will take a very very long time for some of them. If there's anyone else waiting there, invite them to your party and duo them a few times. The respawn rates are so quick, that it's always better to team up with whoever's there and kill it multiple times.
