I feel like Im always saying this but go with GC coilovers.
They use Eibach springs and if you desire you can choose the spring rates when you purchase.
Of course there are other alternatives like a true threaded body shocks but Im just a sucker for Ground Control.
Currently Im running on H&R sports and they are a quite a bit too soft for my liking. I ran Skunk2s for a little while with a 300f/400r (or something like that) and it was pretty streetable as long as the Konis were dialed down enough. Ended up selling em though because I needed to make a quick buck. After this Christmas and depending on finances Im going to pick up a set of GC coilovers w/ a 350f/400r spring rate. Ive tried this setup out in a friends ride and I was pretty impressed with the streetability/performance ratio of it. Well thats my two cents decide for yourself.