Yes I'm looking to get a 4G phone before the tiered data takes hold, hopefully a good deal pops up.
I'm kind of in the same position. I have a Droid 1 rooted, but thinking about getting the TB. If I get a TB from ebay, can I just switch from my D1, or do I have to go into Verizon and change from my current plan to a 4g plan? If I have to get a new plan, I'll need to do that before the new tiered plans go into effect.