FIW the lunchbox delete seems to give the most bang for your buck. I have the Borla exhaust and love the sound. I am thinking of putting on the factory resonator to keep more low speed noise down.
Before people ask the resonator for the FF is just an expansion tube with no baffling. straight trough so there will be no restrictions just slight sound change at lower speed.
White Platinum Tricoat Metallic
2012 Ford Focus Titanium
Handling Package Nitto Motivo's
Borla Exhaust with UltraQuiet resonator
K&N X-4870. Steeda RSB