Well I recently bought a set of S. techs to replace coil over sleeves... Man those coil overs ARE harsh! I wish I could give u a comparison on how these ride, but Im still waiting on parts to finish the susp before I can drive it... But the height does look nice... The rears do sit lower than the fronts for some reason... Hopefully they just need to settle... But from doing some reading, these are possible the best springs for daily driven cars... Remaining a decent amount of performance, while maintaining a like stock comfort... So if you daily drive, your car, and just want comform, decent drop, and decent performance, get the S. Techs... But if u want a slammed look, and superb handling, you may want something else...
One thing I do want to point out tho... I found this out after I already bought mine and was worried... But luckily mine were genuine... But take a look at this page:
http://www.tein.com/counterfeit/warning.html
There are counterfeits out there so becareful!