I have had the Ohlins R & T kit on mine for almost two years now. Money very well spent.
Before that, handling was completely wayward compared to my e86M or even my e46 M3 vert. Car needed steering correction during fast turns or even going straight every time I lifted my foot off the gas pedal. I guess the eibach springs the car came with when I bought it made it even more nervous up front.
When I did the swap the car had 30000 kms. The rear shocks were literally shot. You could compress the shocks completely with minimal effort.
Another good feature with Ohlins is that you can keep ride height almost stock , less than half an inch lower, without messing suspension travel.
Try CG camber plates up front with those, you'll it.
Here is a pic of mine.
https://static2.car.gr/9649447_0_b.jpg