The Rockford Fosgate P5002 amp running at 500W x 1 @ 4ohms.
From what I've read in this group it seems most everyone agrees that 8
gauge power and ground wires will suffice for most any application.
But the salesman where I'm purchasing this gear is trying to sell me

i went into a stereo store and the guy wanted to sell me Orion
which i had never heard of before
i was thinking polk or kenwood because i get half off the 2nd pair on
crutchfield.

I am trying to tune my PPI 6600 AMP for this setting.  I mainly listen to
Techno/House/Dance type music.
Looking at the chart below taken from the users manual, what setting do you
think would give the best sound and can you give some explanation on why??