I also suggest DEPO's. I have them with Thinline Angel eyes + HID and love them.
I'd go with Chromiums, though.
You get what you pay for when it comes to car stuff and BMWs. Don't go cheap if you don't want it to look cheap or perform cheaply.
1993 325is - Frigg - Grounded
2001 Z3 2.5 - Išunn - Active