Colonist, Earthborn or Spacer Sidequests in Mass Effect

Which of these 3 gets the more interesting quests?

By interesting I mean more backstory, tougher decisions, etc.?

None, I really can't remember a single thing about the side-quests, so that means they sucked, really bad.

So imo they all are the same, it's up to you, they don't really have much of a story and they are extremely short, something like go there, kill a few geth, find quest log, find another mission.

What Twistlock said. But since Mass Effect 2 will allow you to use saved games from the original, you should just go ahead and run them all for replay value.