Bought the HID kit for my bike, cheap kit, 13k miles and light is always on. I turn bike on and off alot, sometimes the HID even turns on without bike being on which i heard is bad for the unit, and still no problems at all.
So the cheap kits aren't bad at all!
Spent 20$ on bulbs for my high beams in honda, not even a month later one bulb done, here goes another 20$, that = 40$, should just get HID"s but i know its not smart for high beams, specially since they have the DRL settings....
My point is this, many times you pay for the name, but sometimes you get what you pay for. Its hard to tell unless you see reviews first.