Test Pipes and Y-Pipe Question...?

VAUROS

I will be getting a '13 Nismo Z soon and I'm planning my exhaust mods. I do not want to replace the stock rear section but I do want to enhance the sound of the exhaust. Berk, FI and AAM seem to be the most popular options for test pipes, cats, and y-pipes. My goal is to obtain a deeper exhaust sound without too much added rasp. If I go non-resonated test pipes with a y-pipe, what kind of sound will that yield? I know if I go resonated test pipes the sound will be deeper but more subdued compared to non-res pipes.

Which non-res test pipes would yield the best overall sound with or without the y-pipe without producing too much rasp?

Thanks!

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Rides: 2011 Nissan Maxima - Black (Daily Driver), 2013 Nismo Z - Pearl White (Soon)
Previous Rides: 2013 GT-R Premium, 2012 GT-R Black Edition, 2011.5 E92 M3, 2005 E46 M3