I've been really happy with my '07 and had no problems so far. I bought it November 1 of last year with 41k miles. I've got the 4.10 rear end too and love it.
$16,000 sounds about right as that is what I paid for mine via a friend who is a buyer for a dealership. It would have listed for $18,000 or so on the lot.
2013 JKU Rubicon 10th Anniversary
Co-President, Texas Four Wheel Drive Organization - Sugar Land Chapter