type of headlight for H4 HID

[boggy2006]

hi,

I'm looking at upgrading to HID and first need to replace the standard sealed units to ones which take a H4 bulb, but I have been told some headlight types work better than others by projecting a better beam and not blasting the light out in all directions. Does anyone know which is best eg. projector, clear lense, magnifying, standard, reflector, etc etc? There are a few on ebay, any suggestions which might be the best type?

http://shop.ebay.com.au/i.html?_nkw=....c0.m270.l1313



Thanks