Hey mate, have you considered these ->
http://www.ae-international.com.au/...m-headlight-hid-conversion-kit-canbus-h7-35w/ I have these in 4300k for the reasons mentioned above. They are made for the VF and completely seal with dust cap and no canbus error. for high beams I went with LEDs as i dont do much highway driving at night. my high beams are more for flash dickheads on our roads (and occassionally being nice as well)
EDIT: if u were going down the road of bulbs I highly recommend the Osram Nightbreaker Unlimited. I had them in my previous car, a Swift, and they were fantastic. Can't comment on how they go in a VF, as when i got my VF I went straight to the above HID kit.