I've got FSD and Eibach's on, personally I don't think the FSD's get to do their job because of the spring length. My ride is pretty hard, especially considering the roads these days, if I had to drive it everyday, I'd certainly change the springs back to OEM. Going around bends however is absolutely amazing. When my tyres are worn out I'm going to try another brand to see if that helps the ride as I really don't want to raise the ride.
If I was you I'd check out the Bilstein B12 kit or just B6's with standard springs.
GT 3.2 V6 - Q2, KONI FSD & EIBACH PROKIT, GTA REMAP, MICHELLIN PS3's, BMC CDA
159 SW 2.4JTDM TI - ALFATUNED, WIZARD BACK BOXES, KW V3 COILOVERS, NOKIAN WR A3/MICHELLIN PS3, PCA DYNAMICS ALIGNMENT.