My contract with AT&T is coming to an end on September 5 and I will be making the switch to Verizon. I'm really intrigued by the Nexus Prime, so would it be smarter to grab a Droid Charge now for around $70 on contract and then buy the Nexus Prime for ~$600 in a few months as opposed to, say, the Droid Bionic for $299 on contract and waiting a year for an upgrade?