Raybrig!! the Best bulbs I have ever used on JDM's.... they give off great light & have the nice HID look ... not that ricey blue tint. I've had then on there for about 1yr now with no problems... & most places that sell them might warranty them for a yr.
I had a pair of PIAA.... but between the two... I like the Raybrigs way better. I'm running double filament on the H4's for low & high beam... & my H1's are also Raybrig, used as auxiliary/daytime running lights. Raybrig is also a sponsor of the JGTC & GT video games
Not that many ppl run them cuz they're not the cheapest lights... But you get what you pay for.
Ceasar