You're right. The Magnums are going to sound more aggressive than the Bullets due to the smaller muffler that's used on them. I would go with the Magnums. Now, you just have to decide if you want Dual Tip or Quad Tip.
Good luck and be sure to post pics... we love pics!
Alex
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2003 Z06 - Tint | C6 Z06 Shifter w/Knob | GHL 2-Tip Magnums | Z06 Exhaust Plate | Hood Seal | Zip-Tie Intake | 1-4 Shift Defeat | NGK TR 55s | Nitto 555 RIIs.
My BPP Shifter Broke In Two!! 
Bad Slave Cylinder = New Clutch
