Re: Corsa or Magnaflow?
I had a Magnaflow 16929 that I put on my '15 Limited. Powder coated the tips black and it looked and sounded fairly mean. Got a great deal on it around a holiday sale and it was just a bit more expensive than buying a stock duel exhaust (15 Limited had single exhaust) - thus I pulled the trigger.
II liked it for ~6 months and swore by it. It was loud but no deafening. However, the drone on the highway at 60+ started to get to me a bit. Doing local driving in town was no issue though. Looked into having it removed but ended up trading that Jeep in. Much happier with the quieter HA exhaust right now.
Not sure if that helps, but that's my 2cents
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2016 JGC High Altitude 4x4 V6 in Brilliant White