after having a lot of hassle with this myself, i tried several options...
upgraded to phillips extreme vision bulbs - better than standard candles, but still not good enough for my liking
upgraded again to osram night breakers - seemed a tiny bit better than the phillips, but could have just been a trick of my eyes(there probs very similar)
adjusted the beam height under the bonnet - even with the cockpit wheel adjusted to its highest setting, the light cut off was still not very far up the road (i put this down to the incorrect springs being fitted at rear which makes it sit high therefore causing the beam to be closer than it was before springs were changed) - this seemed to help a fair bit as i could see further up the road, albeit with pretty dull lights (note: not so high it was in oncoming traffic, high enough to where it should have been set)
fitted HIDs - by far the best method providing your happy with the bending of legalities involved as stated above about the washers and lamp reflectors etc. ive had them fitted for a month or so and only been flashed once, but that was probably due to my beam angle being high from when i had the candle halogens... the light output is soooo much better and the colour is even better, i have 2 VERY prominent cut off lines now whereas before it was so dull i could barely see where the cut off were (this might have been affected by the complete overhall i did when i fitted HIDs i cleaned inside and out etc)
hope this helps
for reference this is the kit i got... also note its a 55w kit compared to the more common 35w kit people use: http://www.hids-direct.co.uk/h7-55w-d-lumina-smart-canbus-hid-xenon-conversion-kit/