Im debating over these two wondering which one I should get. I want good navigation and sound.

Thanks

They are both good units, I chose the Z1/2/3 because of the hard drive. If you don't care for that, then the Eclipse will do...

I don't own an Avic but I do own an Eclipse(older model) and the Nav. & Sound is very good ! Thinking about buying another one for my other car.