I just installed the NX7000 in 2005 GMC Sierra last weekend and so far I am very impressed with the unit. Navigation works well and seems to be fairly accurate. Drove into D.C. last week and traffic updates and lane guidance worked well.
A few additional items I installed along with the unit:
KT-HD300 (HD Tuner Module) - Nice integration with the NX7000. Only complaint is that the radio volume seems low compared to other sources on the unit (SD card or iPod). I had poor FM quality with the stock radio and am going to try replacing the antenna.
KS-BTA200 (BlueTooth Module) - Wor
