Just added this Roadtop 8.8" standalone unit to my wife's 2015 OS. her car has RF soundsystem w/Bluetooth, but no navigation or aux input jack.

this unit has dual Bluetooth - connect phone to it, then connect the unit to the car (if you have an aux-in audio jack, you can use that, but we don't). as a bonus, the steering wheel controls still work for phone and audio functions.

easy install without the hassle and expense of installing a new headunit. i paid $240 for it on Amazon. was going to get my brother one for Xmas, but see that the price jumped up to $299 ... i guess i'll wait until Black Friday and see if it goes on sale ...

 

This is on sale today for $110 at Amazon. How have you been liking the unit in the year you've had it, Landshark?