Ground control coilovers , there are reviews all over the internet, contact them and they will ask you some questions about how you want the suspension, and they will custom build a kit for you and it will perfect!
if you just want to lower , dont care about the ride quality , these gets you slammed for 450$ shipped at your door or cheaper if you pick them up in the states. I had them on my e36 years ago and it wasnt bad for the price i paid. It slammed so much i was hitting the fender lol.