Its funny how much hate edub370 has on the AAM. I daily drove the Z with AAM and larger y pipe. True there was drone. There were 2 small spots. One a tab bit over 2k rpm and the other right @ 4k rpm. The drone is such a small compromise for the huge weight saving over stock and the aggressive and yet addicting exhaust note at WOT. Plus now that AAM Ti-Tip is on sale.. the regular ones you can get for a lot less than $400
OP if you have the cash to go full cat back I'd highly suggest picking up Tony's FI exhaust as it sounds incredible and very exotic. Might satisfy the sporty exhaust note the Z is lacking from factory your looking for.
Whichever way you decide to go.. keep us posted and don't forget to post some videos
