I travel throughout the southeast USA and need good phone coverage. I'm considering CarolinaWest as cell phone carrier since they have such good pricing plans for unlimited calls, data packages, etc. But I need to know how good their coverage is outside of the western North Carolina area and also how good their data package plan works in outlying areas? Do they use Alltel's and/or Verizon's cell towers throughout the USA? Any comments or information would greatly be appreciated.