University, though I'd be comfortable enough with the Gaians or Peacekeepers. Or Drones/maybe Data angels in SMAX. Knowledge and individual freedom appeal to me most. Cult and Believers don't allow real freedom of thought, same for Cybers in a different way. Yang and Spartans don't seem likely to give much freedom of lifestyle choice, all part of a vast machine. And Morgan is waaay too materialistic for my taste. Though if your question was phrased differently, I could see the temptation of Userpers.. "Risks of Flowering: considerable. But rewards of godhood: who can measure?". Still, doable as any of the others, and probably a much better life in the meantime.