CCFL can be fine since if a ballast blows, it's outside the headlight. Up until recently, I'd argue they were better than LED's (more even light, brighter, etc.) LED's have come a long way in this application, but LED's still don't have the uniform light of a CCFL ring. On a lot of them, you can see the individual LED's lighting up when you get closer. Unless you get the Morimoto xB's, but those have that yellow color which can work for some, but definitely doesn't match with a lot of color schemes. Also, LED rings can have individual LED's go out which means you're going to need to open the headlight again.