I am wavering between using one or the other of these in my new system using the factory head unit ( see my post in System Design - 2016 Buick Regal system). I will need 6 channels to drive the speakers, A front Component set and rear coax, all Morels. I will probably also be adding a sub to the trunk, not sure what size yet. What are the pro's/con's between these 2 DSP/Amps other than the Audison gives me 2 spare channels. Thanks in advance for the help.