Different strokes for different folks. I'm more of a data-heavy, talk-less person, I tend to use my iPhone to do productive things than just talking into it. And to be productive, I need data allocation that is not restricted to a set ceiling. For example, I need to use the Foreflight app, to prep me early for work with details I needed like weather forecast, Notice to Airmen (NOTAM) downloads, METAR/TAF readouts, radar mapping (should the need arise, like typhoons over coastal Japan and China), and that is for this app alone. Read my news by Mobile NEws Network app, update data on the Units app, 3G GPS manoevering while in Malaysia, not to mention my constant need to be connected to my favourite news network(here and the States, as well as other related items like tech, Apple-related, tons more), and that 3GB ceiling can look a little bit cramped.