Matching Springs

I'm planning on getting the Tokico Illuminas in a couple of weeks. I was wondering what is the best spring to pair with these shocks? I want somewhere around a 1.5" drop.

funny, i just ordered a set of rims and a set of H&R springs. it's a 1.4" drop in the front and a 1.3" in the rear. according to the people on the org they offer the most even drop and best ride. i gotta start saving for my illumina's now.