Got my unit, installed I in 45 minutes. I swear to God I've never been happier with my car (other then my Angel eyes).
Android side is fast, not laggy or anything, Bluetooth works excellent on other side (especially when playing music). Steering wheel controls work flawlessly, WiFi connects great...
The GPS is my only problem but I'll work on that another day. This is well worth the money. ($20 duty even though I was told I wouldn't pay anything) totals it to about $580 with backup camera and WiFi.
Like I said bad things at the moment are GPS, the fact that I played $20 (but it was worth it), and no instructions.