What phone should I get?

I use verizon. i currently have the voyager and I am getting an upgrade this month. I want a phone with a data plan ($30/ month) The phone I really want is the Thunderbolt, but that's the best, and obviously most expensive phone that verizon has right now. My second choice was the Droid x2, which I could get for $99.My problem is that I could get the Droid x for free, but it's not the newest version. Would the $99 be worth it? Or should I just get the old model?