Hard to say without more knowledge of your setup.
On my E30 I found the Koni Sport from Ground Control didn't match up well with H&R OE Sport Springs, I since changed to IE Stage III springs and kept the Koni's. 
Popular opinion is the Bilstein Sport works well on E30 and E36 with mild suspension upgrades, they are a little less expensive and don't require tuning or strut modifications.