Tested: ” If you want to save a little cash, and maintain your freedom, you can always pick up a used Android phone on eBay or Craigslist. Since you would be getting this phone second hand, warranties are of little use. You need to make sure the handset is as described. That guy on Craigslist probably doesn’t take returns.”
Having a nice GSM based Android phone as a backup isn’t such a bad idea, especially if you’ll be traveling to Europe.