I replaced all the lights on the car with LED. And only my low beam bulbs are HID. It was simple. The hardest would be the headlights because its a tight squeeze. But since I was installing my hella tones I already had the bumper removed so it was cake.
LED's 5 years ago weren't as reliable as they are now technology has gotten better especially because everybody is trying to save on energy. So companies are investing more in them.