I live in Phoenix Arizona and do not find their nav software lacking. It seems to have all the most current buildings in AZ. and has been darn accurate. Aside from not having voice commands in the nav it is a great product IMHO.
I have compared it to my handheld garmin nav unit and it isnt any better.
Once I had the unit in place for a bit I just had to learn all the in and outs of the software. Alot of people i see complaining are those that had older units and are comparing them to the 140. I only had a stock RNS-E Audi Symphony system in my car prior to and this unit is light years better.
As for voice control in other areas, people need to remember that when you get into the car you have to allow the HU to build the VR command list once connected to your phone. THEN, it will work fine.I had issues for awhile where I thought the voice control wasnt working for either phone calls nor browsing through music.
Once it goes through and finished the VR command list, for me 3 minutes or so, then all commands work. Save for nav that is. If I could have nav commands this would take this unit form an 8.5 to a 9 in my grade of 1-10 with 10 being the best. If you don't wait it will have a hard time finding your music or making a call.
I had a slight issue with the IPOD cable from pioneer but once I figured that issue out, it works flawlessly.