I love my H&R Super Sports...they are a stiffer spring so the ride is rougher than stock but the handling and looks are well worth it imo.
H&R, Eibach, BBK, Ford Racing, and SVE Economy Springs are a few popular brands. Most offer different rates and drop heights so do your homework before buying springs.
12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros
03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB