By switching to Verizon, my guess is that you've very likely to incur substantial early termination fees if you just quit the contract, but I thought I'd mention a method that you might want to use to significantly cut both your current AT&T costs and then your Verizon Droid bill in the future. In doing this, you can at least try to make up some of the expense of dropping AT&T. We tend to think of wireless costs as fixed, but you can tinker with your plan to optimize your features to best suit your usage and often save significant cash in the process. I know this because I work in the consumer advocacy division of the company Validas, where we electronically audit and subsequently reduce the average cell bill by 22 percent through our website, fixmycellbill.com (and I'll add that 22 percent equates to over $450 per year for the average user). Put simply, Validas guards against frivolous and unnecessary charges that inflate your cell bill more than it should be for your usage. You can find out for free if fixmycellbill.com can modify your plan to better suit your needs by going to the website.
For more info, check out Validas in the national news media, most recently on Fox News at myfoxtampabay.com/dpp/consumer/conlaw/lower_cell_phone_bills_072409.
Good luck to everyone reading on cutting costs, especially in light of this unforgiving economy.
Dylan
Consumer Advocacy, fixmycellbill.com