I am going to get flamed for it, but I've had the Tein S's on my 02 wrx wagon for quite a while now. You can see a pic in the member profile I think.
I've said it before and I'll say it again. If springs were religious deities, Tein S-Techs would be the Devil himself. The drop involved murders struts and they lower the car so far out of the optimum angles for the control arms that they hurt the handling, not to mention the spring rate is very close to stock so it's not an improvement at all. You'd be better off cutting your springs. A decent lowering spring will raise the spring rates in order to improve the handling characteristics and take advantage of the lower center of gravity.
I have an 03 wagon, and like the drop that the s-techs have but hate the front being so stiff and the rear rates being sooo soft. I was thinking about going with eibach springs.