I had the Eibach springs on my Evo. The drop was nice but the ride was really stiff. I wanted a more aggressive drop, so I changed to the S.Techs after about two weeks and LOVED them. The drop was perfect (it looks amazing on the RX-8 too) and the ride was great. I'm going with the S.Techs again on my RX-8. You can't go wrong. The only issue will be clearance. With my body kit, I had to be careful about where I was driving and avoided entrances with large variances in grade. Daily driving was not an issue...just be careful about parking curbs. Make sure you give yourself enough clearance. I expect the same issues in my RX-8 when I throw them on.