Do you have unlimited data on your plan Vanilla?
Ok, well here is what Verizon has done. If you use your upgrade to get a new phone at a cheap price, you loose your unlimited data plan.
I have a DROID X that is eligible for an upgrade, but when I went in to upgrade they dropped that bombshell on me, so I still have a DROID X.
From my cold dead hands will they get my unlimited data plan.
If you buy a phone at full price, you can keep the unlimited data.
Either buy a new or used phone or enjoy your Droid X a little longer, or give up unlimited.
I use my data more than minutes.
I hook mine to the tv at work and watch movies. I still average less than 10 gig a month. I work by myself so nobody cares.