i truly have never had an issue, i drive my car daily, like every day, i have never been flashed or blinded anyone, or anything, the original bulbs, even Phillips were horrible.
the LED placement is very deliberate to reflect of the reflector in a specific way, mounted one higher one lower, but yes its not going to be perfect, but as said i have never had an issue. that being said, retrofitted HIDs, although pricey, win at life.