I had a look into doing an HID conversion the only problem is the auto levelling, I didnt fancy paying £300 to be told to take remove them as they were illegal. The washer jets could easily be fitted, Ideally youd want see through glass too, but you could get away without it.
If you want superior peformance you can get non road legal motorsport bulbs which put out high wattages but theyre like £80 a pair. Im sure Brun will be on soon as hes had all kinds of different bulbs hell probably be able to tell you whats crap and whats not.