What is best anyhow?
Subjective results are subjective at best.
Best sound? (Trick question)
Best size? (U don't need anything larger than stock unless ur making serial powa.
Lowest cost?
Easy user install?
Most durable finish?
I mean I went from a 3" flowmaster super44 and small borla I thought sounded the best.....
To a small borla still, and a 3" magnaflow about 22" long and think it sounds the best because I hardly hear it.