Get the Axxis Deluxe brake pads. Mine have a little squeaking to them but the difference in brake dust is AMAZING!!!! I could have probably put a bit more anti-squeal on the backs of the pads though....

I put SP rotors on the front of my X5 and I am quite happy with them:

http://www.raceshopper.com/sp_rotors.shtml

There are also a few sellers of drilled 4.6 rotors on Ebay......