Sorry I havent posted my feedback since i got back home. So for anyone who still may be interested, the ST springs are amazing. The ride is no longer as stiff (not that it bothered me to begin with, my dad hated the way it felt, so he never drove it), handles just as well and i have more confidence in the corners. Amazingly, it doesnt sit on the bumpstops anymore, there is plenty of travel, and amazingly it sits even lower than it did with the Tokicos!!! (My dad ended up measuring the height and it is lower, he just thought when it was initially installed it seemed like it sat higher) The thing im happiest about is that it doesnt weave anymore on the highway, the steering feels tight, instead of the vauge, swerving feel i got on the highway. Im very happy with the setup and highly recommend the ST springs for your setup. The Tokicos are nice for a budget, splurge and go for the Illuminas to set up the dampening force to your liking. If money is of no concern, go for Koni's, people on the IS300 forums seem to prefer those to Tokicos, although i dont know if their opinions can transfer to a different car...