[Camman]

Cheap hid's will work just fine but like others have said, they will have adverse effects on the reflector bowl. Over time you will start to notice that the light output is not as bright as when you first put in the bulbs. This is due to the bowl losing it's reflective ability because of the UV light from cheap bulbs.

With cheap hid bulbs you take a gamble with longevity too. They could last a long time or they could go out in 2 weeks.

If you want good 6k bulbs, I suggest going with Morimoto but you seem pretty set on the cheaper alternative so all we can do is give our opinion and experience.