Diode Dynamics LEDs are pretty high quality and they back them with a 3-year warranty, if you're worried about dimming and failure. "Too Bright" is kind of subjective, but the Stage 1 bulbs are slightly less than double as bright as the stock bulbs, while the stage 2 bulbs have triple the brightness of the factory bulbs. Unfortunately, we don't have an install video of the vanity lights as of yet.