I'm having a lot of fun with the Combat Assist beacons when they are spawning and bunkers when they aren't. Good mix of flying around a planets moons helping protect sites or saving people getting ambushed in space. When Combat assists are spawning, you can grab Mediums for around 30K and Highs anywhere from 40-250K, fighting a mix of Hammerheads, Valkyries, Reclaimers and Andromedas.
And then while waiting for one of those Beacons to spawn, you can fly down and do some bunkers or bounty hunting to fill the time.
But the most fun for me has actually been Mole Mining or Recalimer Salvaging with Friends.