It's a funny story about the HID's, and my garage looks like a hid warehouse!
Set1 - Ordered 1 set from China, h1 and h4-3, £23
Got impatient waiting for them to arrive
Set2 - ordered a pair on eBay from a Chinese seller but despatch from the uk, asked them to send a h1 and h4 bulb. 2 days later, I received 2 boxes from them, 2 pairs of h1 so 4x ballasts, 4x bulbs. £18.
Improvised the h1 to fit the h4 socket.
Set3 - Bought another set on eBay h4-2 as I wanted a h4 bulb. £18.
Set 1 arrived 2 days after set2, so I put the h4-3 in instead of the improvised h1. Set3 arrived another 2 days later!
All 35w and 6k.
So for under £50, I've got 8 ballasts, 5x h1 bulbs and 3x h4 bulbs! Should keep me going for a few years...
Only fitted for a week now, no problems with the glass. As for mot, it'd only take 5 minutes to change to normal bulbs if necessary.
H1 - single hid bulb
H4-2 - hid low beam and halogen high beam
H4-3 - single hid bulb which moves for lo/hi beam.
I have h1 (left side) and h4-3 (right side) fitted in the picture.
Planning on buying a h4-4 bulb to try, 2 hid bulbs, requires 2 ballasts. Think I may have a spare laying around!