i had the real EVO 3, it was awful. went to perrin non-resonated, recently switched to resonated.
for you, i'd go with a q300, unless you want to change your front pipe as well.
i plan on doing tomei EL header, HKS dual resonated with my ownhighflow cat, and mate that with my resonated 2.5 perrin
use to have an STI with EWG, catless, non resonated etc. got tired of the loud pretty fast and so did everyone around me in the mornings, i shit you not i set of this dudes alarm every morning
now its nice to have loud when you want it and silent when you aren't on it.