i don't believe it was a mistake for you to make the switch. i dont know if you noticed or not, but many others on the eastern coast have also been without proper 3G coverage and reception. it's more than likely because of the hurricane. if i was you, i would wait it out until your current billing month is almost up and switch towards the end if it still hasn't been fixed.
my 3G was out 4pm EST to around 8am EST the next day, from 9/2 - 9/3. area code is 49286, in michigan. what's weird about this is that it started while i was at work, in ann arbor. ann arbor was supposedly the 2nd city in michigan to get 4G from sprint and they started rolling that out back in july. also weird was that i was the only one there that was without 3G, everyone else on sprint had normal 3G coverage & reception. thinking about doing some PRL hacks and seeing how that goes because lately my 3G has been going out much more often.