I've got Philips X-Treme vision H7 in my Hella Celis- had these bulbs in various sizes in all my last three cars and they're brilliant
I popped down to my local Halford's to see what was available and they were useless to say the least.....they just looked at me blankly and then told me exactly what a standard mk3 GTi unit should have in it......followed by.........they sound like the headlights they have on a van??