Here is my personal experience with the 120bt so far. It's a ****** head unit for it being their top of the line model, don't get me wrong Pioneer is a great unit but not if this is their flag ship. I saved huge on it paying 850 and a 100 rebate coming so total is 750 so I had to jump on it, or else I would have saved up for the Kenwood. You do have to hit the OK button to bypass the "lawyer" page on start up, not that big of a deal for me. Navigation was the main thing I got this for, and it is nothing compared to TomTom or Garmin, will get me where I want to go but hard to get POI on this sucker. Radio quality is great, only draw back is I cannot control the output volume of movies as this is also the second reason I got this unit. Radio would play fine at volume 10, but when running DVD I have to bump it up to 15-20 range. Went through all the work of getting Hard drive loaded with movies only to find out it will not play to the rear monitors. And the last thing that I am pretty peaved about is not being able to use Bluetooth. Their MIC is a total piece of crap, everyone that has this installed is complaing about it. There are some lucky ones that can use bluetooth with this head unit, but from what I can gather, maybe 1% of the buyers are able to use it.
If I had to do it all over again, not sure I would go with this unit if I had a choice. But then again it all depends on what you are getting the unit for. Quality seems great so far, very easy to use once you get a hang of it. But the options that I am interested in just isn't cutting it. If you haven't bought this unit yet, I would suggest reading more about it in the avic411 forum.