well a mate of mine had an Audi RS4 B5 and he had KW Variant 3 under it, he recons that KW Variant 1 will be the best i can get.
Added 46 minutes later:
edit:
i just checked H&R and i wont go for that
H&R Front lowering 40-70mm, Rear lowering 30-60mm €980
KW Variant 1 Front lowering 40-75mm, Rear lowering 40-75mm €850
besides i heard good things about KW so not a difficult choice there.