A friend of mine who drives an M3 recommended Stealth Auto which I used for my car. The bulb finish is completely chromed out which doesn't give you the blue and orange glow (if that's the look you're going for).
http://www.stealthauto.com/Departments/Stealth-Bulbs.aspx
I think it's a bit more expensive than the Silverstars, but I highly recommend it.