Have to agree with the concensus here.... I used to have KYB Ultra SRs with Prodrive springs on my bug and it worked very well. Moved to Tein coilovers and it is stiffer and great on track but on most roads, it can get bumpy and twitchy. The shocks/springs combo lets you drive faster and safer on anything but perfect flat roads as they are far more compliant over bumps.
Really depends if its going to be your daily driver...
