Almost all of the aftermarket integrated LED set-ups are absolute garbage as far as being visible to other traffic is concerned. Especially bad are the ones where half the lens turns into a turn signal instead of a brake light when the turn signal is activated. Most are simply are not visible in daylight, and only marginally better at night.
If you want traffic behind you to be able to see you and recognize when your brake lights and turns signals are on, the best option is simply to remain stock in most cases.