I've thought about this, too. Here are some of our options:
-FRS navi unit ($400 -
http://www.ebay.com/sch/i.html?_odkw...+navi&_sacat=0)
Pros/cons: (Maybe someone with an frs can speak to this?)
-Nexus 7 (~$300 - source: lots of reading)
Pros: Looks sweet, more functionality than any other head unit on the market, cheap, good sound quality, maps always up to date, very responsive touchscreen
Cons: even FEWER physical buttons, need to tether your phone to use google maps, touchscreen issues in the winter
-Aftermarket Navi ($expensive)
Pros: Fast, good sound quality, up to date maps, responsive touchscreen, easy install
Cons: Usually very expensive to get high-quality unit, will lose stock bluetooth mic
I'm still really not sure what the best setup is, so I've gritted my teeth and kept using the OEM brz nav. Have no desire to pay +$1k for a good aftermarket, but also feel the nexus 7 install has issues that cannot be worked around. Maybe buying an FRS nav and selling the brz one would be the best option?