Looking to leave my company's blackberry phone plan for a byod. Right now I have no worries over daa, but since I will now be paying I want to be smart about this. I am going to go for the iPhone 5 once it's announced, an add it to my wife's existing Verizon plan with a share everything plan. She has 2gb of data with her iPhone 4s, but hardly uses anything as she is nearly always in wifi. I travel more or work but mostly will use it for web, email, local music, etc. one thing I plan on using a few times a week is the navigation feature in ios6. Would 2gb be enough, will 4gb even be enough? Thanks in advance for the help.