After spending some time in both our 04 STi and 05 shop STi cars, one with pinks the other with Prodrive springs, I think the Prodrives have improved alot. But I still prefer the JDM STi "Pinks" over anything. The pinks lower the car 20mm and after 46k on my set , I was sad to see them go. I think for the new STi owner and or the occasional track day and or autocrosser, these work very well. But dont discount the PRodrives, as they have made some changes to the STi version springs and they are great as well.
Racecomp Engineering LLC.
9123 Old Annapolis Rd Suite 103w
Columbia, Maryland 21044