i run tenzo R coilovers on my car theyre really nice. but the spring rate is not as aggresive as i want. Theyre comfortable and offer good handling but not extreme handling. My standards are way hight tho as far as suspension components are concerned. I dont recommend coilovers simply because you will find yourself rarely changing the ride hight. I would get some H&R Race springs if it were me...but i also like my suspension so tight that if ran over a quarter i could feel the year it was printed. My vote is going to go with some Eibach's....a good mix of both worlds and they are inexpesive.
www.inlinefour.com has some of the best prices on springs ive seen. good luck and if you have any questions feel free to PM me...i love this suspension shit.