When it comes to exhaust, it's a matter of preference OP. You might be happy with the MagnaFlows and hate the FI's. Most people go for the FI's because of the sound and a lot of people like it. That doesn't guarantee you will. There are less expensive alternatives if you only care about numbers.
I think the Stillen or Ark CBE sounds pretty good. I would look into those as an alternative since lightly used setups can usually be had for around $800 and pop up in the for sale section every now and then.
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[09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R]
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