Even though there's readily available support and parts in Aus?
I decided on BC myself after much reading. Installing them this afternoon, but it will be a little while until a drive report as my alternator has just gone bung.
If you want a comprehensive review/reasoning behind using BC's read this thread
http://ozvr4.com/forums/showthread.php?t=5702
I challenge you to find a more in-depth writeup