No feedback on the systems you mention but I love my Borla Climber S Type. It dumps behind the axle and tucks up mostly out of harms way. Sounds good - not too loud but let’s me shift the manual trans by ear.
I had a Ramsey Rep 8000 for over 25 years and on 3 different vehicles. I sold it with my JKU Never failed me. I went to warn Zeon this time - we’ll see how it does.