Only problem being that Vertical's version is missing some context i have them both and i actually went back and forward to edition's
cause the VIZ version has pages that actually explain what happening in the world which does impact also what is going on in the story, nd it was made by Tezuka himself !!!
Don't know why they did not include it perhaps they where just like why would we care or something ... which is weird cause you think Vertical is the kind of company to do stuff like this, alot of the Tezuka stuff they did publish had some kind of historical impact (if not everything) though most the stuff they publish now you would hardly say so anyway ...
Since they went away from Tezuka i have hardly picked up any vertical to begin with.
Anyway if you are a completist like me you would go as far to get the VIZl version even if it's out of print.