I still feel that around the city, well where I live anyways, potholes and bumps are everywhere and the stock shocks of the xi are under dampened for the springs. I'm trying to get a hold of some koni adjustables now but I'm told they aren't made for the xi yet. Seriously, If you live in an area anything like NE with the horrendous roads we have here you might want to consider shocks with the springs, unfortunately I can't get my hands on the shocks yet.
2006 Indianapolis Red E60 M5: 20x9, 20x11.5 HRE, SS exhaust coming soon
2006 Japan Rot E90 330xi: AFe CAI, Stygar SSK, ACS Body, H&R Sport