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I dont know which is best but I love my Supertrapp. I have it set up for low to mid range. Love the rumble and tunability. I also have one on my scrambler.....I'll never buy another brand
well if you just wanted somethingf that was loud you can just take the peipe off and leave it off. i think atvmadman mean he wanted something that would give his quad some *****. not just loudness.