Man, that is hard to say. So much depends on your particulars. I would say try the Somatazine first (however the f*@@$ it is spelled) because capsules are just so easy to travel with.
That said, if you travel like a week at a time, and wanted to do 2iu a night of hgh, you could just take a 10iu vial and the 1ml bacstat water they usually give you with it on the road with you, then reconstitute when you arrive. This all assumes you are in one place for a week at a time, and can keep the same hotel room with a mini fridge or something. But I'm sure you have worked all that out before, I just remember my days as a road warrior (lower case to avoid confusion with Animal, Hawk or Mel Gibson

) and those are the things I would do.