Hi guys, i know there's many threads about exhaust systems and everybody has their favorite systems but i decided to go either with Gibson or Spintech 9000 super pro on my 09 with the Hemi and single exhaust. I really don't want a super loud exhaust and cabin drone is my biggest concern. I already have a charger with flowmasters and the drone is super bad. Price on these 2 exhausts is exactly the same. There's no much info about Gibson and only read nothing but good stuff about Spintech. Which way should i go? Thanks!