I have nevertried the 8120, it does look pretty neat
Considering the features and the price difference the pioneer is prob a better deal, but as far as bugs, im guessing kenwood is the safer choice. The avic f series is much better now with the latest update.
The Kenwood's Garmin navigation software, bigger screen etc all look nice, but the screen icons and menu's all look pretty generic.
Is there a site like avic 411 for Kenwood? I wouldn't mind checking out that site.
The only reason I went from my avic d3 to a f series and not a kenwood was the time and money cost upgrading all components. My f series is compatible with the xm module, pac steering wheel controls and even the wiring harness, so quick easy upgrade. I didn't even have to wire in any additional modules and even go to remove the bluetooth one from the d3.