we’re talking ridiculous amounts of LEDs (300+) or so is said by Clearcorners.com
For 1, those lights look like crap (sorry, IMO)
and 2, this isn’t nearly close to how many that is needed
I don’t know about real life difference between CCFL and LED but according to this seller CCFL is brighter and it looks like these rings are what we are looking for.http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=310119473538
CCFL = Cold Cathode Fluorescent Lamp/Light
LED = Light Emitting Diode
CCFL uses a charged gas.
LED uses the movement of electrons in a semiconductor material.
Ive debated CCFL in the past but have never heard or seen them used on cars. My question is how long will they last and will they hold up to the cool/hot temperatures.
i know this is not exactly what your looking for but check this out
http://video.google.com/videoplay?docid=980547339061120203
I’ve seen some of the newer halo kits for Infinitis, BMW, etc. using the CCFLs.
But that’s a good point about lifespan and temperature threshold. Glad you mentioned it, because I’ve never seen a LED burnout or an inverter blow - however, CCFL vendors say, on average, 30-50,000 hours of continuous use. That’s still quite a while. But it’s still glass; one crack and that’s it.
It depends what company you go with in terms of dealing with temperature. Basically, don’t go with Crappy McNobody cough ebay
Here’s a good site I found:
http://www.lite-eyes.com/
amazing stuff 
The above site/vendor is quoted from a thread:
The CCFL light is made of glass. The protective housing is made of a high heat durable plastic. The Lite Eyes CCFL Halos/Angel Eyes are guaranteed to be waterproof, shock resistant, and heat resistant. The CCFL ring, protective housing, and inverter will not melt, distort, or burn out from high temperatures (unlike the LED counterpart). There is a full lifetime warranty on the lights as well. This is a high quality product that is professionally made.
There’s cheaper out there but, of course the results will vary. And for the record ebay has lots of high quality stuff, but it’s swimming in a sea of rubbish. you just have to search well 
This was what I always knew of how to make a halo. LEDs + slatted clear plastic. pretty simple. but yeah, CCFLs are getting a lot more rep now. They’re pretty bright and can be a bit more uniform. But there’s some great ideas like using reflective tape behind the LED halo to make it about perfect. This guy did a good job:
http://video.google.com/videoplay?docid=-2758135885592309829&hl=en
i was gona do this last year but got busy, the clearcorners way is the way to go. The ebay stuff is cheap for a reason. The ones u posted are not bad but still… huge LEDs… youll notice on most ricer kits with little style they use these gigantic leds.
Hundreds upon hundreds of tiny LEDs that would be baller.
My dad suggested me something what the angel eye guy did… getting special plastic that transfers light like that… just like our cluster gauge lights… and shape it accordingly… (just an idea to toy with).
Seeing the angel eye video gave me idea, why not be different try half circles? You should take a pencil and paper and toy around with some sketches, then gather info on various things ppl have done like the angel eye and try to manipulate the idea that would fit the designs… why not.
Frickin hell im so busy with work right now, i have time for nothing… i have another project in mind but no time for it and i abandoned this one like months ago… its good to see others engaging in this though… its just all good fun.
^ Fun until you attempt to “take apart the housing”, and end up melting it in your oven.:o
Heatgun, patience and delicacy are your best friends in this department as well as some tolerance for pain when your working with your bare hands.
Yeah what dirrtydevvo said.
I have several tail lights i have to experiment with that i dont care about. It’s been done.
Oh yeah what I was saying in my post… I was observing different newer fancier cars like the newer 5 series and 3 series bmws, i havent actually observed them up close but while driving next to them, it looks like they too employ the same concept of light transfering plastics instead of actual LEDs… but smartly placed.
Try to catch a glance on highway when you can
Check out what I mean:
i love the rear lights on the 5 series.