You need Eibach Pro springs for a non-GTI to get an even stance. They don't do them for a GTI, only the red sports springs, which are low enough to mess up the roll center (increases body roll over stock).
Eibach Pro for a non-GTI (maybe GTD spec) will drop a GTI around 10mm, which is what you want to keep the roll center where it needs to be and you get a nice uniform arch gap all round. They are the best springs for a road car, period. No increase in harshness and are the best progressive rates I've ever used.
Vogtland are pretty good springs but they don't put as much effort into the stance as Eibach do.