I've been eligible for quite some time now and have recently decided on the X with having been on the fence between the X and SF for the past 2 months. My question, however, is whether it's worth upgrading now or holding out for LTE and phones that support it. Here is the primary purpose of the question: I currently have a phone that doesn't use data. If I get a phone and unlimited data plan now, that unlimited data should later be grandfathered into when I upgrade to a phone that supports LTE 2 years from now, correct? That is at least my understanding. Or, do you feel the tiered pricing that VZW will be using at the start of the year won't be too bad and pretty practical in terms of price vs. data usage? Unless you're a heavy data user with streaming TV shows and music all day, you probably only use 2-3 GB(?), and so perhaps a $20-25 data plan for let's say 3 GB may be a better option than continuing to pay $30 for "unlimited"?