http://www.telegraph.co.uk/science/science-news/8717446/Helium-balloon-will-take-space-tourists-into-the-atmosphere.htmlThere would be couple of hour journey to 35km. Would you choose that over 5mins in sub-orbit? I probably would. I consider the view to be more remarkable experience than the weightlessness. Of course even better if you could boost a rocket from 35km -> 100 km for couple of minutes