Ian seems like a nice drop. I drove a (e39) 540 this weekend with PSS9's and was amazed how "planted" the car felt with no roll. Then drove a 335 with PSS10's and e36 m3 with Koni FSD's
Got back from NY yesterday and my car felt like a damn buick, we (e92's) really got the short end of the stick on our stock sports suspensions and i feel cheated...
Conclusion upgrade your suspensions its a completely different car