I have the Centric Rotors and their powerstop pads, they bite better than oem BUT it isn't even the same ball park as my Lexus...I've driven Fords for 30 years, their brake systems aren't the strong suit...The brembo equipped cars aren't bad! What kind of brakes do you have on your car now?
There is not much the aftermarket does not offer
The OP asked a question and I answered it... Yeah I don't enjoy spongy pedals.No one compares base brakes if you want braking you get a brembo car. Brake pedal feel has nothing to do with performance so thats personal preference. I guess brembo doesn't know how to make good brakes
I think the aftermarket has performance pretty well covered.
A few things that I've found myself looking for but not really finding:
Adjustable rear sway bar with settings that are softer than stock
Solid performance-oriented FUNCTIONAL front splitter for the 13-14.
A decent selection of lightweight/functional hoods (most are heavy and just for looks). A competitor to the tiger racing hood would be interesting.
A decent replacement for the rear license plate surround. The stock striped one doesn't go with anything on the car IMO. The only choices I've seen are the ugly RTR pocketed one and carbon fiber.
An in-car controllable dual mode axleback (that actually sounds good)
A few other parts that are out there but have rather limited or undesirable choices, especially on 13-14:
Front upper and lower grilles
Aftermarket body pieces (bumpers, fenders, side skirts, etc)
Rear decklid covers
Aftermarket headlights designed to improve light output rather than look cool (or both)
Quality steering wheels that retain the airbag