Who is your favorite U.S. wireless carrier? Jump onboard and compare your answers to winners (and losers) in the newest wireless rankings from J.D. Power and Associates. Overall winners for the six measured regions of the U.S. are now available from the popular rankings company. Note that the newest ratings are for 2007, Volume I (the first quarter, we suppose). As usual, T-Mobile continues to win spots across the board (it's been there for years now), with three direct wins and three ties. Honorable mentions? Alltel, AT&T and U.S. Cellular. Gone from the results? Sprint Nextel. Please note that your mileage may vary. See actual rankings after the break.