Just been reading the posts because I am changing the standard bulbs to better ones, after reading a few differnt posts I went for Philips Vision plus, read good things about them and they seem to be highly recommended. Hopefully good improvement over standard.
After reading this thread people make it seam so easy to convert to HID, people just saying buy them off ebay and fit, but you need to wire up the power module that powers the HID bulbs off the original wiring, then mount it somewhere that is safe and secure, the modules are not tiny so require some space for mounting. It can be done but also need to make sure that they are legal and dont dazzle on coming traffic as there is nothing worse.