"What would look best..."
That's up to you. You can drop anywhere from 1" to 2.25". You want it to look "slammed" and suffer the consequences? Or do you want a modest ("Hmmm, there's something about that car...") drop?
BAT springs: F -1.0" R -1.0"
Eibach: F -1.3" R -1.0"
H&R: F -1.75" R -.75"
B+G (standard): F -1.6" R -1.6"
B+G Autobahn: F -2.25" R -1.6" (for 98+)
(All drops are "average" and reported by manufacturer)