As a general piece of advice Doug, you might be more successful when asking for advice if you were a touch more polite.
Anyway, as I read that, you want a PE5 reel capable of landing a GT which you might catch when you are flyfishing for Bonefish in Kiribati?
Sustain or Stradic - I would forget it. But if you must, then a Sustain and not Stradic IMO. If you cant stretch to Stella, Saltiga or Twinpower, I would actually go for a bigger reel for the same (or less) money like a Saragosa 14000 or 18000. I think there is more chance of that holding up to the stress that a sizeable GT provides on equipment.
If I knew what rod you are going to pair it with, those views may well change.