I've only used a few DD LEDs in the past, most of them have not been. You can buy whatever you want for most bulbs, but for important stuff (headlights, brake) I wouldn't cheap out. That's not to say DD has the best stuff either. I just tried DD's SL1 for headlights in my wife's Pacifica. They had a lot of good info on YouTube about them, and they do seem very well designed, but the brightness wasn't any better than halogen. Went with GTR Lighting Ultra 2 instead, which seem to be the best on the market. Those bulbs are $200 a pair, but if they beat everything else on the market, they are worth it IMO.