Hello, everyone. I'm new to the forum, so please forgive me if this is posted in the wrong place. We have a 2011 Maxima SV. It only has the monochrome/amber display. I do not necessarily want to replace the display itself, only the factory stereo. My question is what is the best aftermarket stereo with built in navigation, usb, and auxiliary port for under $600 that will fit in the factory stereo spot? I saw some on Crutchfield. that look nice. Just wanted to get opinions from people who know a lot more than I know about auto electronics. Also, do these systems with navigation actually fit with no problems? Thanks a lot.