I'm pretty sure the Goddess sells at some Zoner bases in the Edge Worlds. I bought it once on Planet Gammu, Omicron Kappa.
"It is a cold universe until you know God as your Father, and then it becomes a home. Even the next life simply becomes the Father's house, home."
—David Pawson
Goddess aren't that bad. They aren't great, and you have to watch your energy consumption, but they get the job done. Flashpoints, though, are indeed rubbish.
EDIT: Oh, and Els, I have to say that your contention that Junker guns are any good gave me my dose of laughter for the day.
PGs aren't that bad. I find them better than Furies and Barragers for the effect. Alternatively you could go with Vampires or Skyblasts if you can work them into your RP somehow, since they're rather neutral weapons, vamps in particular.
Codenames are actually damn good if you can aim, but I'm guessing they don't fit your characters roleplay or can't be mounted on your ship.