What is the best stereo head unit for a Nissan Altima?

What is the best head unit for a 2008 Nissan Altima?
Preferably one with satellite radio and a way to connect an iPhone 6

There are plenty to choose from, there's not a single best unit.
As long as the unit is the same din size or smaller, it can be installed in your car with the right dash kit and harness.
I recommend, Pioneer, JVC, Kenwood, or Alpine.

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