We have a family plan for our two phones, and unlimited data on my Dinc2.
Up until now, we have not been big users. Neither of us are wild about 4inch screens. They are for the young..
Additionally, We are in a weak G3 area. None of the services have strong data connections around here..
I purchased the wife a Ipad 2, wifi only, and figured to use my Dinc2 as a hot spot for those times when we didn't have access to the kids & friends wifi while traveling.
I also would like to know how to guess what data usage is.