Another A vs B. Aren't there several threads like this? I'm not trying to be a negasaurus here...just sayin.
Bottom line.....as far as numbers go, BERK and F.I. (or even STILLEN) produce roughly the same performance gains. It's all personal preference from there (i.e. sound, aesthetics, customer service, and one's 'willingness to wait' threshold).
Have at it...
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Dan
F.I. SS CBE 18-R || Llumar 40% tint
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