Motorola or Cobra are your better brands, with both having models with an advertised 5 - 7 mile range (that is line of sight). ANY obstruction will greatly reduce their range. They can be bought just about anywhere electronics are sold. Walmart carries both brands in the $40 - $60 range. Some have a weather channel but raises the price (not worth it IMO).

Be sure to take along the second radio to use as a spare or take extra batteries if you plan on doing a lot of talking.