Hi all, I know its a very ambigous question, and depends on person to person on their daily usage. Well, for me.. I will be mostly using the iphone on 4g network on the weekdays while commuting back and forth work and home. The trip is a total of two hrs. That makes it 10 hrs commuting a week.. 40 hrs a month. In this trip, normally i'd be facebooking, while on pandora.. etc. No netflix for me on the phone... except at home through appletv. Plus the regular emails on weekdays.. weekend if out with family, casual facebook. I have a 50mbps comcast business line which is virtually unlimited.. over wifi.. so i wont be using 4g at home. I might slightly share the dataplan on my ipad via tethering. But nothing more. I have pre-ordered with verizon, i still have to decide on a data plan. Is 8gb a month more than enough? Was planning to square in 100 dollars max incl taxes for the phone connection. 8gb with unlimited talk and msg is 90 bucks on verizon.