I can't seem to find the exact company that we used this year but this is another company that carries the same products. We used 36" strips they are very bright and we definitely had to white material them to keep them legal as you would need sunglasses without it. The LED's are great as they take allot of abuse and keep working.
http://www.superbrightleds.com/light_bars.htm
We didn't use cold cathode tubes because we were worried about them breaking.