I say spend little bit more and do it right. These are audi ballasts and projectors with 4100k lightbulbs(HIDplanet) retrofitted into gutted knockoff projector headlights. The bulbs are rated at 3000 hours.
Notice the nice spread? thats how the projectors should work, when you can see beams of scattered light, you could be blinding on coming traffic and also your not getting the best out of the stuff you just bought.